| Human Tragedy | Deaths | Place | Date | Cause | Principal Memorial |
| Black Death (Plague) | 100,000,000 |  Europe | 1347-1351 |  Rats | Sedlec Ossuary, Czech Republic | |
| Great Pandemic (Flu) | 50-100,000,000 |  Worldwide | 1918-1920 | Nature | Penny Hill Cemetery, Alexandria, VA | |
| "Great Leap Forward" | 30-45,000,000 |  China | 1958-1962 |  CPC & Mao Zedong | ? | |
| Holodomor (Famine) | 10,000,000 |  Ukraine | 1932-1933 | USSR & Stalin | Kiev Memorial (+ Edmonton, AB) | |
| Atlantic Slave Trade | 8,000,000 |
 West Africa & at sea | 1500-1860's | Europeans | Click here for many monuments | |
| Laki Volcanic Eruption | >6,000,000 |  Iceland + Europe | 1783-1784 | Nature | ? | |
| Holocaust (Genocide) | 6,000,000 | Europe | World War II | Nazi Germany | US Holocaust Memorial Museum, DC | |
| Central China Floods | 3.7-4,000,000 | Central China | 1931 Jul-Nov | Nature | High watermark at Hankou (August 19) |
| Partition of India | 3,400,000 |   India & Pakistan | 1947 | Hindus+Muslims | Memorial at Wagah (proposed) |
| North Korea Famine | 2,000,000? |  North Korea | 1995-1997 | Floods+Mismanagement | Presumably none |
| Cambodian Genocide | 1,700,000 |  Cambodia | 1975-1979 | Khmer Rouge | Killing Fields Mem., Choeung Ek |
| "Cultural Revolution" | 1.5-3,000,000 | China | 1966-1976 | Mao Zedong | Cultural Revolution Museum, Shantou | |
| Asian Flu Pandemic | 1-4,000,000 | China+World | 1956-1958 | Nature | ? |
| an Gorta Mor/Great Famine | 1,000,000 | 
Ireland | 1845-1852 | Phytophthora infestans | Famine Memorials, Dublin & elsewhere |
| Great Purge | 950-1,200,000 | 
USSR | 1936-1939 |  NKVD & Stalin | Butovo Firing Range near Moscow | |
| Tutsi Genocide | 800,000 |  Rwanda | 1994 Apr-Jul | Hutus | Kigali Memorial Centre, Kigali | |
| Algerian Independence | 700,000 |  Algeria | 1954-1962 |  France+Guerrillas | Monument des Martyrs, Algiers |
| American Civil War | 620,000 |  USA | 1861-1865 | Opposing Armies | Lincoln Memorial, Washington, DC | |
| Armenian Genocide | 500,000+ |  Ottoman Empire, Turkey | World War I | Ottoman Empire | Memorial, Tsitsernakaberd, Armenia | |
| Iran-Iraq War | 500,000 |   Iran & Iraq | 1980-1988 | Opposing Armies | Al-Shaheed Monument, Baghdad |
| Darfur Genocide | 400,000 |  Darfur, Sudan | 2003-Now | Janjaweed | | |
| Rape of Nanking | 300,000 | Nanjing, China | 1937 Dec | Imperial Japan | Nanjing Massacre Memorial Hall |
| Ypres Salient | 300,000 |  Flanders, Belgium | World War I | Opposing Armies | IJzertoren Museum, Diksmuide | |
| Doolittle Raid Retaliation | 250,000 | Zhejiang & Jiangxi, China | 1942 May-Sep | Imperial Japan | ? | |
| Battle of Okinawa | 240,734 |  Okinawa, Japan | 1945 Mar-Jun | Opposing Armies | Cornerstone of Peace, Mabuni | |
| Indian Ocean Tsunami | 230,210 |  Indonesia & other nations | 2004 Dec 26 | Nature | Khao-lak Lamru Nat Pk, Thailand |
| Battle of Verdun | 230,000 |  Lorraine, France | 1916 Feb-Dec | Opposing Armies |
Douaumont Ossuary, Douaumont |
| Haiti Earthquake 7.0 | 230,000+ |  Port-au-Prince, Haiti | 2010 Jan 12 | Nature+Bad Bldgs | "temporary" refugee tent camps |
| Lebanese Civil War | 200,000 |  Lebanon | 1975-1990 |
Civil War | National Memorial, Beirut (future) |
| Pillage of Carthage | 150,000 |  Carthage, Tunisia | 146 BCE | Roman Empire | Ruins of Carthage, Tunisia |
| Great Kanto Earthquake | 142,000 | Tokyo, Japan | 1923 Sep 1 | Nature | Tokyo Earthquake Memorial |
| Hiroshima Atom Bomb | 140,000 | Hiroshima, Japan | 1945 Aug 6 | USA | Hiroshima Peace Memorial Hall |
| Holocaust (Netherlands) | 101,800 |  Netherlands | 1942-1945 | Nazi Germany | Memorial Center Camp Westerbork |
| Tokyo Air Raids | 100,000 | Tokyo, Japan | 1945 Feb-Aug | USA | Center of Tokyo Raid+War Damages |
| Murder of Prisoners | 100,000 | Delhi, India | 1398 | Timur (Tamerlane) | Gur-e Amir Tomb, Samarkand |
| Battle of Gallipoli | 98,758 |  Gallipoli Peninsula, Turkey | 1915-16 | Opposing Armies | Gallipoli Peninsula Peace Park |
| Nagasaki Atom Bomb | 80,000 | Nagasaki, Japan | 1945 Aug 9 | USA | Nagasaki Peace Memorial Hall |
| Great Pakistan Earthquake | 79,000+ | Kashmir, Pakistan | 2005 Oct 8 | Nature+Bad Bldgs. | |
| Great Sichuan Earthquake | 69,000+ | Sichuan, China | 2008 May 12 | Nature+Bad Bldgs. | Beichuan Nat Erthqk Ruins Mus |
| Herero/Nama Genocide | 60,000 |  Namibia (ex-SW Africa) | 1904-1907 | Germany | |
| US Military Deaths | 58,256 |  Vietnam | 1959-1975 | Opposing Armies | Vietnam Veterans Memorial, DC |
| Operation Gomorrah | 50,000 |  Hamburg, Germany | 1943 Jul 24+ | UK (Royal AF) | Nikolaikirche, Hamburg |
| Nicaraguan Civil War | 50,000 |  Nicaragua | 1979-1990 | Contras+CIA v Govt. | Parque de la Paz, Managua | |
| Dresden Air Raid | 24-40,000 | Dresden, Germany | 1945 Feb 13 | UK+USA | Monument to Memory of WW-II | |
| Reign of Terror | 16-40,000 | France | 1793-1794 | French Mobs | Bastille, Paris, France | |
| US Military Deaths | 36,940 |  Korea | 1950-1953 | Opposing Armies | Korean War Vets Memorial, DC |
| Krakatoa Eruption | 36,417 | Sunda Strait, Indonesia | 1883 Aug 26 | Nature | Memorial, Bandar Lampung |
| Babi Yar Massacre | 33,771 | Kiev, Ukraine | 1941 Sep 29-30 | Nazi Germany | Babi Yar Monument, Kiev |
| Mount Pelee Eruption | 30,000 | Sainte-Pierre, Martinique | 1902 May 8 | Nature | Volcano Museum |
| Guerra Sucia (Dirty War) | 9-30,000 |  Argentina | 1976-1983 | Govt (& Church?) | Villa Grimaldi, Buenos Aires |
| St. Bartholomew's Massacre | 5-30,000 | Paris, France | 1572 Aug-Sep | Roman Catholic mobs | Various paintings |
| Sendai Earthquake/Tsunami | 27,786 | Sendai, Japan | 2011 Mar 14 | Nature | |
| Rumbula Massacre | 25,000 |  Ruimbula Forest, Latvia | 1941 Nov-Dec | Nazi Germany | "Soviet Era" Marker, Rumbula |
| Battle of Britain | 23,002+ |  Great Britain, UK | 1940 | Nazi Germany | Kent Battle of Britain Museum |
| Battle of Antietam | 23,000 | Sharpsburg, MD, USA | 1862 Sep 17 | Opposing Armies | Antietam National Cemetery |
| Katyn Forest Massacre | 21,768 | Near Smolensk, USSR | 1940 March | Russia | National Katyn Memorial, Baltimore |
| Battle of Austerlitz | 19,371 |  Prace, Czech Republic | 1805 Dec 2 | Opposing Armies | Cairn of Peace/Muzeum Brnenska |
| Partition of Palestine | 16-21,000 |   Israel+Palestine | 1947-1948 | Haganah etc. | Museum of Underground Prisoners |
| Six Day War | 12,276-17,683 | Israel v Egypt+Syria+Jordan | 1967 Jun 5-10 | Opposing Armies | Memorial, Ammunition Hill, Jerusalem |
| Anti-Sikh Riots | 10-17,000 | New Delhi, India | 1984 Oct-Nov | Hindus w/govt help | Sikh Heritage Ctr & Holocaust Mus, Derby |
| Chemical Leak | 16,000 | Bhopal, India | 1984 Dec 2 |  Union Carbibe | Memorial (future) | |
| Osaka Air Raids | 15,000 | Osaka, Japan | 1945 | USA | Osaka International Peace Center |
| Bataan Death March | 6-11,000 |  Bataan Penins, Philippines | 1942 | Imperial Japan | Friendship Tower of Bagac |
| 228 Incident | 10,000+ |  Taiwan | 1947 Feb 28 | Koumintang | National 228 Mem Museum, Taipei |
| Chemical Warfare | 10,000 | Iran | 1981-1988 | Iraq | Tehran Peace Monument |
| Epuration sauvage | 9,000 | France | 1944 | France | |
| Srebrenica Massacre | 8,000+ |  Bosnia & Herzegovina | 1995 July | Serbian
Army | Genocide Memorial, Potocari |
| Unnamed Hurricane | 8,000 | Galveston, Texas, USA | 1900 Sep 8 | Nature | Galveston Hurricane Memorial | |
| Yokahama Air Raid | 7-8,000 | Yokohama, Japan | 1945 May 29 | USA | |
| Kobe Earthquake | 6,434 | Kansai Region, Japan | 1995 Jan 17 | Nature | Disaster Reduc. Museum, Kobe |
| Chile Earthquake 9.5 | 6,000 |  Valdivia, Chile | 1960 May 22 | Nature | Pacific Tsunami Museum, Hilo, HI |
| Executions after July 20 Plot | 4,980 |  Nazi Germany | 1944 | Gestapo | Memorial to German Resistance, Bendlerblock, Berlin |
| Yellow Fever Epidemic | 4,000-5,000 | Philadelphia, PA, USA | 1793 Summer | Nature | Philadelphia Lazaretto (1799) |
| Poison Gas Attack | 3,200-5,000 | Halabja (Kurdistan), Iraq | 1988 Mar 16-17 | Saddam Hussein | Martyrs Monument & Museum |
| US Military Deaths | 4,295+ | Iraq | 2003-2009 | Invaders v Disitants | Eyes Wide Open (AFSC) |
| Cherokee Trail of Tears | 4,000 | Tennessee-Oklahoma, USA | 1838 Winter | Pres Andrew Jackson | New Echota Historic Site, Georgia |
| Nuclear Accident | 4,000 | Chernobyl, Ukraine | 1986 Apr 26 | Plant operators | Memorials in Kiev & elsewhere | |
| Sabra & Shatila Massacres | 700-3,500 | South Beirut, Lebanon | 1982 Sep 16-8 | Phalangists & Israel |
Martyrs Square of Sabra & Shatila Massacres | |
| "The Troubles" | 3,400 | Northern Ireland, UK | 1960's-1998 | IRA et al | Carrickarnon Peace Monument (on hold) | |
| Earthquake & Fire | 3,000+ | San Francisco, CA, USA | 1906 Apr 18 | Nature | San Francisco Fire Dept Museum |
| Unjust Nazi Executions | 3,000 | Plöetzensee Prison, Berlin | 1933-1945 | Nazi Germany | Plöetzensee Memorial, Berlin | |
| Balangiga Retalliation | 2-3,000 | Balangiga, Samar, Philippines | 1901 Aug-Sep | US Army | Balangiga Bells, Cheyenne, WY (booty) | |
| 9/11 World Trade Center | 2,823 | New York City, USA | 2001 Sep 11 | Al-Qaeda | 9/11 Memorial & Museum, NYC | |
| Kragujevac Massacre | 2,796 |  Kragujevac, Serbia | 1941 Oct 21 | Nazi Germany | Oct. 21 Mem. Park, Kragujevac | |
| Tiananmen Sq Protests | 2,600 | Beijing, China | 1989 Jun 4 | China | Goddess of Democracy, Beijing | |
| Pearl Harbor Air Raid | 2,452 | Honolulu, Hawaii, USA | 1941 Dec 7 | Imperial Japan | USS Arizona Memorial, Honolulu, HI |
| Peshtigo Forest Fires | 1,200-2,400 | Wisconsin & Michigan, USA | 1871 Oct 8 | Nature | Peshtigo Fire Museum, Peshtigo, WI |
| Johnstown Flood | 2,200+ | Johnstown, PA, USA | 1889 May 1 | South Fork Club | Johnstown Flood Museum, Johnstown, PA |
| Tel al-Zaatar Massacre | 2-3,000 | UNRWA Ref Camp, Lebanon | 1976 Aug 12 | Lebanese militia | ? |
| Halifax Explosion | 2,000 |  Halifax Harbour, Canada | 1917 Dec 6 | Mont-Blanc (French) | Memorial Bell Tower, Halifax, NS |
| Gwangju Uprising | 1-2,000 | Gwangju, South Korea | 1980 May 18-27 | Korean & US military | Mangwol-dong Cemetery, Gwangju |
| Hurricane Katrina | 1,836 | New Orleans etc., USA | 2005 Aug 29 | Nature | Katrina Memorial, Biloxi, MS |
| SS Sultana Explosion | 1,800 | Mississippi Riv, TN, USA | 1865 Apr 27 | Boiler misuse | Memorials in TN & 5 other states |
| Minamata Disease | 1,784 | Minamata, Kumamoto Japan | 1932-1968 | Mercury poisoning | Minamata Disease Municipal Museum |
| Guernica Air Raid | 1,654 |  Guernica, Spain | 1937 Apr 26 | Germany & Italy | Museo de la Paz de Guernika |
| Sinking of the Titanic | 1,517 | Atlantic Ocean | 1912 Apr 14-5 | White Star Lines | Fairview Cemetery, Halifax, NS |
| Sinking of French Fleet | 1,297 | Mers-el-Kébir, Algeria | 1940 Jul 3 | Royal Navy | Memorial, Coastal Path, Toulon, France |
| Sinking of the Lusitania | 1,198 | Off Cobh, Ireland | 1915 May 7 | German Sub U-20 | Lusitania Peace Memorial, Cobh |
| SS General Slocum Fire | 1,021 | East River, NY City, USA | 1904 Jun 15 | Capt. Van Schaick | Tompkins Square Memorial |
| Berlin Wall Escapees | 1,000 | Berlin, Germany | 1961-1989 |  EastGermany+USSR | Checkpoint Charlie Museum |
| Kawasaki Air Raid | 1,000 | Kawasaki, Japan | 1945 Apr 15 | USA | Kawasaki Peace Museum |
| Seige of Masada | 936 | Judean Desert, Israel | 73 CE |
 Israel v. Rome | Masada National Park |
| People's Temple Suicide | 918 |  Jonestown, Guyana | 1978 Nov | Jim Jones | Evergreen Cemetery, Oakland,CA |
| Cauquenes Earthquake 8.8 | 800 | Concepción, Chile | 2010 Feb 27 | Nature | |
| Sioux Uprising | 300-800 | Minnesota, USA | 1862 Aug-Sep | Sioux Indians | Reconciliation Park, Mankato, MN |
| SARS Epidemic | 774 | China+Taiwan+Canada | 2002-2003 | Nature | SARS Animal Monument, Beijing |
| Marzabotto Massacre | 770 |  Monte Sole, Italy | 1944 Oct | Waffen SS | Peace School Foundation, Monte Sole |
| US Army "Exercise Tiger" | 749 | Lyme Bay, Devon, England | 1944 Apr 28 | German E-Boats | Tank Memorial, Torcross, England |
| Oradour Massacre | 642 | Oradour-sur-Glane, France | 1944 Jun 10 | Waffen SS | Centre de la mémoire d'Oradour |
| Khojali Massacre | 613 |  Khojali, Azerbaijan | 1992 Feb 25 | Armenian+Russian military | Memorial in Lankaran
|
| KLM/PanAm Collision | 583 | Tenerife, Canary Islands | 1977 Mar 27 | Runway confusion | Intl Memorial, Mount Mesa Mota |
| JAL Flight 123 | 520 | Mt Takamagahara, Japan | 1985 Aug 12 |  Mechanical failure | JAL Safety Promotion Center, Tokyo |
| My Lai Massacre | 347-504 | My Lai, Vietnam | 1968 Mar 16 | USA (US Army) | MyLai PeacePk-MadisonQuakers |
| Fort Mims Massacre | 500+ | Fort Mims, Alabama, USA | 1813 Aug 30 | Creek Indians | Ft Mims State Hist Site, Tensaw, AL |
| HMS Birkenhead | 450 |  Gansbaai, South Africa | 1852 Feb 28 | Rusty lifeboats | Plaque, Danger Point Lighthouse |
| Gainesville Tornado | 436+ | Gainesville, GA, USA | 1936, Apr 6 | Nature | Roosevelt Monument, Gainesville |
| Paoli Massacre | 400+ | Paoli, Pennsylvania, USA | 1777 Sep 20-1 | British Army | Granite Monument (1877) |
| Sand Creek Massacre | 400 | Kiowa County, CO, USA | 1864 Nov 29 | Colorado Terr Militia | Sand Creek Massacre NH Site
|
| No Gun Ri Massacre | 400? | No Gun Ri, South Korea | 1950 Jul 26–9 | US Army | No Gun Ri International Peace Park |
| Massacre of Pioneers | 400 less | Great Plains, USA | 1842-1859 | Plains Indians | Massacre Rocks State Park, Idaho |
| Beslan School seige | 334 plus |  Beslan, Russia | 2004 Sep 1-4 | Ingust+Chechen militants | ? |
| Air India flight 182 | 329 | Atlantic in Irish air space | 1985 Jun 23 | Inderjit Singh Reyat | Sundial, Humber Bay East Park, Toronto |
| Wounded Knee Massacre | c.325 | Pine Ridge IR, SD, USA | 1890 Dec 29 | US Army | National Historic Landmark |
| Jedwabne Pogrom | 300 plus |  Jedwabne, Poland | 1941 Jul 10 | Polish Gentiles | Jedwabne Memorial, Poland |
| Deir Yassin Massacre | 300? | Near Jerusalem, Israel | 1948 Apr 9 | Irgun + Stern Group | "Deir Yassin Remembered," Geneva, NY |
| Great Chicago Fire | 200-300 | Chicago, Illinois, USA | 1871 Oct 8-10 | Mrs.O'Leary's cow? | Chicago Water Tower |
| Fort Caroline Massacre | Hundreds | Jacksonville, Florida, USA | 1565 Sep 29 | Spanish v. French | Fort Caroline National Memorial |
| Marine Barracks bombing | 299 | Beirut, Lebanon | 1983 Oct 23 | Hezbollah | Beirut Memorial, Jacksonville, NC |
| Bay of Pigs invasion | 294 |  Playa Girón, Cuba | 1961 Apr 17-9 | USA (CIA) | Museo municipal de Playa Girón |
| Pan Am flight 103 | 270 | Lockerbie, Scotland, UK | 1988 Dec 22 | Mohamed Megrahi | Dryfesdale Cemetery, Lockerbie |
| KAL flight 007 | 269 | Sea of Japan | 1983 Sep 1 | Russian Air Force | Tower of Prayer,Cape Soya,Japan |
| Battle of Little Big Horn | 263 | Crow Agency, MT, USA | 1876 Jun 25-6 | USA v. Indians | Ltl Big Horn Battlefield Nat Mon |
| Cherry Mine Disaster | 259 | Cherry, Illinois, USA | 1909 Nov 13 | Kerosene lanterns | UMW Monument |
| Sinking of USS Maine | 258 | Havana Harbor, Cuba | 1898 Feb 15 | Spain or accident | Maine Memorial, New York City | |
| Arrow Air flight 1285 | 256 | Gander,Newfoundland,Canada | 1985 Dec 12 | Ice on wings? | "Silent Witness," Gander Lake (also in KY) | |
| Voyage of MS St. Louis | 254 | Atlantic Ocean | 1939 5/13-6/17 | Nazis, Cuba, USA | Florida Holocaust Museum, St Petersburg |
| Fort Pillow Massacre | 231 | Henning, Tennessee, USA | 1864 Apr 4 | Confederate Army | Fort Pillow State Park |
| US Embassy bombings | 223 plus |   Nairobi+Dar-es-Salaam | 1998 Aug 7 | Islamic Jihad | August 7 Memorial Park, Nairobi |
| EgyptAir flight 990 | 217 | Atlantic off Nantucket, USA | 1999 Oct 31 | First Officer's suicide? | Granite memorial, Newport, Rhode Island, USA |
| Fraterville Mine Disaster | 216 | Fraterville, Tennessee, USA | 1902 May 19 | Negligence | Miners' Circle, Leach Cemetery, Lake City, TN |
| Bali nightclub bombings | 202 | Kuta, Bali, Indonesia | 2002 Oct 12 | Jemaah Islamiyah | Bali Bombing Memorial |
| Long Walk of the Navajo | 200 plus | Arizona & N.Mexico, USA | 1864 Jan | US Army | Bosque Redondo Memorial, Fort Sumner, NM |
| Madrid train bombings | 199 | Madrid, Spain | 2004 Mar 11 | Al-Qaeda inspired | Atocha Train Station Memorial, Madrid | |
| 9/11 Pentagon | 184 | Arlington, Virginia, USA | 2001 Sep 11 | Al-Qaeda | Pentagon Memorial, Arlington, VA |
| Christchurch Earthquake | 181 |  Christchurch, New Zealand | 2011 Feb 22 | Nature | ChristChurch Cathedral |
|
| Oklahoma City bombing | 168 | Oklahoma City, OK, USA | 1995 Apr 19 | Timothy McVeigh | National Memorial & Museum | |
| Mumbai terrorist attack | 165 | Mumbai, India | 2008 Nov 26 | Lashkar-e-Taiba | 26/11 tablet in lobby of long distance trains section | |
| Earthquake & Tsunami | 165 | Aleutian Islands, AK, USA | 1966 Apr 1 | Nature | Pacific Tsunami Museum, Hilo, HI |
| Scandinavian Star Fire | 158 |   Norway-Denmark | 1990 Apr 7 | Arson & bad design | Scandinavian Star Monument, Oslo | |
| Protest Massacre | 157 |  Conakry, Guinea | 2009 Sep 29 | Guinean Army | Peaceful transition of power | |
| Colfax Massacre | 83-153 | Colfax, Louisiana USA | 1873 Apr 13 | Rioting Whites | Liberty Monument, New Orleans, LA | |
| Triangle Shirtwaist Fire | 146 | New York City, NY, USA | 1911 Mar 25 | Smoking & bad exits | Mt Richmond Cem, Staten Is, NY | |
| 2nd Riel Rebellion | 125 | Saskatchewan, Canada | 1885 Spring |  Province vs. Métis | Bell of Batoche (taken to Ontario) | |
| Kielland Rig Collapse | 123 | North Sea, Norway | 1980 Mar 27 | Undected crack | Brutte Lenke/Broken Chain |
| Explosion of the Saluda | 100 plus | Lexington, MO, USA | 1852 Apr 9 | Boiler explosion | Saluda Steamboat Memorial |
| Ammunition Explosion | 100 plus | Perth Amboy, NJ, USA | 1918 Oct 4 | Accident? | ? | |
| Muhammad Cartoons | 100 plus | Jyullands-Posten, Denmark | 2005 Sep 30 | Various Muslims | Office of Jylands-Posten Daily, Copenhagen |
| Swine Flu (H1N1) | 100+ |  Mexico+World | 2009 Apr | Nature | ? |
| Louisiana Slave Revolt | 97 | Near LaPlace, LA, USA | 1811 Jan 8-10 | Slaves & Masters | Mentioned on Woodland Plantation marker | |
| Gnadenhütten Massacre | 96 | Gnadenhütten, OH, USA | 1782 Mar 8 | Pennsylvania Militia | Gnadenhütten Memorial (1872) | |
| Wellington Avalanche | 96 | Wellington (Tye), WA, USA | 1910 Mar 01 | Nature | Iron Goat Trail on US-2, Stevens Pass | |
| "2nd Katyn Massacre" | 96 | Smolensk, Russia | 2010 Apr 10 | Fog. Also pilot error? | Burials in Poland |
| SSKM Hospital fire | 94 | Kolkata, India | 2011 Dec 9 | Ineptitude & poor equip | |
| Kristallnacht | 91 |  Germany+Austria | 1938 Nov 9-10 | Nazi Germany | Kristallnacht Memorial, Austria | |
| Happy Land Club Fire | 87 | Bronx, New York USA | 1990 Mar 25 | Julio González |
Plaza of the Eighty-Seven (renamed st) | |
| Great Chatsworth Wreak | 85 | Chatsworth, Illinois, USA | 1887 Aug 10 | Careless workers | Roadside Marker (+folksong) | |
Roadside Marker (+folksong) |
| Cross Mtn. Mine Explosion | 84 | Briceville, Tennessee, USA | 1911 Dec 9 | Dust & Gas Ignition | Miners' Circle,
Circle Cemetery, Briceville, TN |
| Massacre of Vassy | 80+ | Wassy, Haute-Marne, France | 1562 Mar 1 | Francis, Duc de Guise | Huguenot Memorial Museum, South Africa |
| Hadassah Convoy Massacre | 79 | East Jerusalem, Palestine | 1948 Apr 13 | Arab forces | Plaques on street & Mt. Scopus |
| Air Florida Flight 90 | 78 | Potomac R, Wash, DC, USA | 1982 Aug 13 | Improper deicing | Arland D Williams Jr Mem Bridge | |
| Utřya Island Massacre | 77 | Utřya Island & Oslo, Norway | 2011 Jul 22 |
Anders Behring Breivik | AUF Camp, Utřya Island, Norway |
/
| Branch Davidian Raid | 76 | Waco, Texas, USA | 1993 Apr 19 | David Koresh & FBI | Branch Davidian Mem, Waco, TX |
| Tay Rail Bridge Disaster | 75 | Dundee, Scotland, UK | 1879 Dec 28 | Bridge failure | Tay Bridge Disaster Song |
| Jenin Massacre | c.75 | Refugee Camp, Jenin, Palestine | 2002 Apr 1-11 | Israel vs. Refugees | Museum in Old Hijaz Railway building. |
| Turtle Mountain Slide | c.70 | Frank, Alberta, Canada | 1903 Apr 29 | Bad mining | Frank Slide Interpretive Centre | |
| Hurricane Andrew | 65 | Miami etc., Florida, USA | 1992 Aug | Nature | Plaque, Biscayne Natl Park, Fl. | |
| Gandamak Massacre | 64 |  Gandamak, Afghanistan | 1842 Jan 13 | UK vs. Insurgents | | |
| Operation Entebbe | 58 |  Entebbe Airport, Uganda | 1976 Jul 4 | Palestinian terrorists | Entebbe Memorial, Philadelphia, PA, USA
|
| 7/7 London Bombings | 56 | London, England | 2005 Jul 7 | 4 British Muslims | 7/7 Memorial, Hyde Park, London |
| Powder Explosion | 51 | Kenvil, New Jersey, USA | 1940 Sep 12 | Accident? | Memorial Plaque (2005) | |
| SS Andrea
Doria Collision | 51 | Nantucket, MA, USA | 1956 Jul 25 | Human error | Underwater Wreck | |
| Kafr Qasim Massacre | 49 | Kafr Qasim, Israel | 1956 Oct 29 | Israel Border Police | Kafr Qasim Memorial & Museum | |
| Silver Bridge Collapse | 46 | Pt. Pleasant, WV, USA | 1967 Dec 15 | Bridge failure | Silver Memorial Bridge | |
| 9/11 Flight 93 Crash | 44 | Shanksville, PA, USA | 2001 Sep 11 | Al-Qaeda | Flight 93 National Memorial | |
| Civil Rights Movement | 40 | Southern USA | 1954-1968 | Segregationists | Civil Rts Mem, Montgomery, AL | |
| Donner Party | 39 | Donner Pass, California, USA | 1846-47 Winter | Snow+Canibalism |
Donner Memorial St Park, Truckee, CA |
| Tulsa Race Riot | 39 | Tulsa, Oklahoma, USA | 1921 May 31 | Rioting Whites |
Greenwood Cultural Center |
| Heaven's Gate Cult Suicide | 39 | San Diego, California, USA | 1997 Mar 26 | Marshall Applewhite | Site of suicide house |
| Massacre of Glencoe | 38 |  Glencoe, Scotland | 1692 Feb 13 | Govt troops (Campbells) | Glencoe Monument (McDonalds) |
| Coastal Road Massacre | 38 | Coastal Highway, Israel | 1978 Mar 11 | Fatah & Abu Jihad | Egged Bus, Egged Museum, Holon, Israel |
| Wall Street Bombing | 38 | New York, NY, USA | 1920 Sep 16 | Anarchists | Scared stone at 23 Wall Street |
| Hindenburg Disaster | 36 | Lakehurst NAS, NJ, USA | 1937 May 6 | Various theories | Marker at disaster site | |
| Domodedovo Airport bomb | 35 | Intl Airport, Moscow, Russia | 2011 Jan 24 | Suicide bomber | | |
| Legionnaires' Disease | 34 | Philadelphia, PA, USA | 1976 Jul 27 | Unidentified disease | | |
| Virginia Tech Massacre | 33 | Blacksburg, VA, USA | 2007 Apr 16 | Seung-Hui Cho | Hokie Stone Semicircle, Blacksburg, VA |
| Passover Massacre | 30 | Park Hotel, Netanya, Israel | 2002 Mar 27 | Hamas | ? |
| Upper Big Branch Mine | 29 | Montcoal, WV, USA | 2010 Apr 5 | Coal mine explosion | Football team uniforms |
| Beit Lid Massacre | 22 | HaSharon Junction, Israel | 1995 Jan 22 | Islamic Jihad | Beit Lid Memorial in the Sharon,
Israel |
| Lake Huron Tunnel Disaster | 22 | Port Huron, Michigan, USA | 1971 Dec 11 | Methane gas explosion | Miner Statue, Fort Gratiot County Park, MI |
| McDonald's Massacre | 22 | San Ysidro, California, USA | 1984 Jul 18 | James Oliver Huberty | Monument to Victims, San Diego, CA |
| Conestoga Massacre | 20 | Lancaster County, PA, USA | 1763 Dec 14/27 | Paxton Boys (mob) | "Indian Burial Ground" (no remains) |
| Ludlow Massacre | 20 | Ludlow, Colorado, USA | 1914 Apr 20 | Colorado State Militia | Ludlow Monument, Ludlow, CO |
| Khobar Towers bomb | 20 |  Dhahran, Saudi Arabia | 1998 Jun 25 | Hebollah Al-Hejaz | Headstones, Arlington National Cemetery |
| Bible Riots | c.20 | Philadelphia, PA, USA | 1844 May-Jul | Nativists | St Augustine Catholic Church, Philadelphia |
| Salem Witch Hangings | 19 | Massachusetts, USA | 1692-1693 | Public histeria | Salem Witch Museum, Salem, MA |
| Soufričre Hills Volcano | 19 |  Plymouth, Monserrat | 1997 Jun 25 | Nature | Montserrat Volcano Observatory |
| John Brown's Raid | 17 | Harper's Ferry, WV, USA | 1859 Oct 16-9 | John Brown | John Brown's Fort, Harper's Ferry, WV |
| Munich Olympics Massacre | 17 | Munich, Germany | 1972 Sep | Black September | Tablet at Olympic Stadium
|
| USS Cole bombing | 17 |  Aden, Yemen | 2000 Oct 12 | Sudan Government? | Memorial, Naval Station Norfolk, VA |
| École Polytechnique | 15 | Montréal, Québec,Canada | 1989 Dec 6 | Marc Lépine | Place du 6-Décembre-1989 |
| ColumbineHS Massacre | 15 | Littleton, Colorado, USA | 1993 Apr 19 | E.Harris+D.Klebold | Columbine Memorial, Littleton,CO |
| Eilabun Massacre | 14 | Eilabun, Israel | 1948 Oct 30 | Israel Defense Forces | Documentary film "The Sons of Eilaboun" |
| "Bloody Sunday" | 14 | Londonderry, N.Ireland | 1972 Jan 30 | British Army | Mural by Bogside Artists | |
| Univ of Texas Shooting | 14 | UT, Austin, Texas, USA | 1996 Aug 1 | Charles Whitman | Admin Bldg Tower (unintentional) | |
| Pullman Strike | 13 | Pullman, Illinois, USA | 1894 May 11 | US Army | Randolph/Pullman Museum/Gallery | |
| I-35W Bridge Collapse | 13 | St. Paul, Minnesota, USA | 2007 Aug 1 | Bridge failure | Bridge Mem Wall, St. Paul, MN |
| Fort Hood shooting | 13 | Fort Hood, Texas, USA | 2009 Nov 5 | Nidal Malik Hasan |
|
| London bombings | 11 | Hyde & Regents Parks | 1982 Jul 20 | Provisional IRA | Two memorials | |
| Deepwater Horizon | 11 | Gulf of Mexico, USA | 2010 Apr 20 | Company shortcuts | Underwater wreak | |
| Mavi Marmara Attack | 9 | Mediterranean near Gaza | 2010 May 31 | Israel | Mavi Marmara in Turkey | |
| Murder of 8 Nurses | 8 | Chicago, Illinois, USA | 1966 Jul 14 | Richard Speck | Graves in Holy Cross Cemetery | |
| Rosewood Massacre | 8 | Rosewood, Florida, USA | 1923 January | Rioting Whites | Ghost Town & Marker | |
| San Bruno Pipeline Explosion | 8 | San Francisco, California USA | 2010 Sep 9 | Defective welds | | |
| Haymarket Massacre | 7 plus | Chicago, Illinois, USA | 1886 May 4 | Strikers & police | Haymarket Martyrs Monument | |
| Hatfield-McCoy Feud | 7 | WestVa./Kentucky, USA | 1878-1891 | Both families | Floodwall, Matewan, WV |
| Valentine Day Massacre | 7 | Chicago, Illinois, USA | 1929 Feb 14 | Al Capone's gang | Capone Grave, Chicago, IL |
| Space Shuttle Challenger | 7 | Cape Kennedy, Florida, USA | 1986 Jan 28 | Failure of O-ring | Memorial, Arlington National Cemetery |
| Space Shuttle Columbia | 7 | Over Texas, USA | 2003 Feb 1 | Loose insulation foam | Memorial, Arlington National Cemetery |
| Great Fire of London | 6 plus | London, England | 1666 Sep 2-5 | Tho. Farriner Bakery | Monument by Christopher Wren | |
| Bat Mitzvah Massacre | 6 | Hadera, Israel | 2002 Jan | Al-Aqsa Martyrs Brigade | ? |
| World Trade Center bomb | 6 | New York City, NY, USA | 1993 Feb 26 | Al-Qaeda | 9/11 Memorial & Museum, NYC | |
| Gabrielle Giffords shooting | 6 | Tucson, Arizona, USA | 2011 Jan 8 | Jared Lee Loughner | Safeway Supermarket, Casas Adobes, AZ |
| Jack the Ripper | 5 plus | Whitechapel, London | 1888 Late | Unidentified | Jack the Ripper Walking Tour | |
| Itamar Massacre | 5 | Itamar Settlement, West Bank | 2011 Mar 11 | Two Palestinians | ? |
| Boston Massacre | 5 | Boston, Massachusetts, USA | 1770 Mar 5 | British troops | Crispus Attucks Monument, Boston, MA |
| Kent State Massacre | 4 | Kent St U, Kent, Ohio, USA | 1970 May 4 | Ohio National Guard | May 4 Memorial, Kent State Univ |
| Altamont Free Concert | 4 | Altamont Track, CA, USA | 1969 Dec 6 | Hells Angels et al | ? |
| Gunfight at OK Corral | 3 | Tombstone, AZ, USA | 1881 Oct 26 | Earps vs. Clantons | Boot Hill Cemetery, Tombstone | |
| Unabomber | 3 | Lincoln, Montana, USA | 1978-1995 | Ted Kaczynski | "Pause," New York City, NY | |
| UU Church Shooting | 2 | TVUUC, Knoxville, USA | 2008 Jul 27 | Jim David Adkisson | McKendry Fellowship Hall | |
| Whisky Rebellion | None | West. Pennsylvania, USA | 1791-1794 | Federal Whisky Tax | Bradford House, Washington, PA |
| Sinking of the Arabia | None | Parkville, Missouri, USA | 1856 Sep 5 | Snag in Missouri River | Arabia Museum, Kansas City, MO | .
| Bridge Collapse | None | Tacoma Narrows, WA, USA | 1940 Nov 7 | Bad design | Two replacement bridges
|
| Japanese-Amer Internment | None | Western States, USA | World War II | USA | Japanese American Memorial, DC | |
| Cuban Missile Crisis | None | Cuba & Straits of Florida | 1962 Oct | Soviet Union | Museo de la Revolution, Havana |
| "Bloody Sunday" | None | Selma, Alabama, USA | 1965 Mar 7 | Alabama State Police | Nat Voting Rights Museum, Selma, AL | |
| Santa Barbara Oil Spill | None | SB Channel, CA, USA | 1969 Jan 28 | ? | ? | |
| Stonewall Riots | None | New York City, NY, USA | 1969 Jun 28 | Gays v NYC Police | Stonewall Inn, New York, NY
|
| Nuclear Accident | None | Three Mile Island, PA, USA | 1979 Mar 28 | Many entities | Roadside Marker, Dauphin Cty, PA | |
| Exxon Valdez Oil Spill | None | PrWm Sound, Alaska, USA | 1989 Mar 24 | Improper navigation | Renamed Dong Fang Ocean | |
| Copiapó mining accident | None | Mina S.Jose, Copiapó, Chile | 2010 Aug 5 | ? | Fénix 2 capsule & Camp Hope
|
| Slavery in USA | Unknown | Southern States, USA | Before 1865 | Southern States | Nat Slavery Mus, Fredericksburg |
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