100,000 to 500,000

Killers with a tally between 100,000 and 500,000 include:

Idi Amin
Country: Uganda
Kill tally: 100,000 to 500,000
Kill tally details: Most sources say 300,000.
Prince Yasuhiko Asaka
Country: Japan, China
Kill tally: 100,000 to 500,000
Kill tally details: 200,000-350,000 Chinese killed during the 'Rape of Nanking'.
Hafez al-Assad
Country: Syria
Kill tally: 100,000 to 500,000
Kill tally details: Up to 25,000 killed in Hama during a siege of the city in February 1982. (Estimates of the number killed vary from 5,000 to 25,000. It is likely that the real figure is somewhere near the lower end of the estimates.) More than 250,000 killed since the outbreak of Syria's civil war in March 2011
Francisco Franco
Country: Spain
Kill tally: 100,000 to 500,000
Kill tally details: Tens to hundreds of thousands. One source says 500,000 killed in the Spanish Civil War, another claims two million executed alone. More sober estimates for executions put the figure at 35,000 killed either summarily or after a hasty court martial. According to military historian Antony Beevor, the figure for non-combatants and surrendered troops killed by Franco's Nationalists during the war "must exceed 100,000 and may be closer to 200,000"
Shiro Ishii
Country: Japan, China
Kill tally: 100,000 to 500,000
Kill tally details: At least 3,000 killed in experiments at the Unit 731 biological weapons facility. Approximately 200,000 killed in field tests of biological weapons. Between 20,000 to 30,000 Chinese killed when plague-infected rats are released from Unit 731 at the end of the Second World War
Radovan Karadzic
Country: Bosnia-Herzegovina
Kill tally: 100,000 to 500,000
Kill tally details: Up to 200,000
Slobodan Milosevic
Country: Serbia
Kill tally: 100,000 to 500,000
Kill tally details: Up to 230,000 killed and three million displaced
Ratko Mladic
Country: Bosnia-Herzegovina
Kill tally: 100,000 to 500,000
Kill tally details: Up to 200,000
Benito Mussolini
Country: Italy
Kill tally: 100,000 to 500,000
Kill tally details: Over 400,000 Italians killed during the Second World War. At least 30,000 Ethiopians killed during the Italian occupation of Ethiopia