1,000,000 to 5,000,000

Killers with a tally between 1,000,000 and 5,000,000 include:

Agha Mohammad Yahya Khan
Country: Pakistan
Kill tally details: 200,000 to three million during the 1971 conflict in East Pakistan (Bangladesh)
Kim Il Sung
Country: North Korea
Kill tally details: About three million killed in the Korean War. Between 450,000 and two million North Koreans needlessly starved to death due to the economic legacy of Kim's regime. (Some reports claim that as many as three million starved.) Hundreds of thousands of deaths of inmates held in custody in the North's extensive political prison camp system
Pol Pot
Country: Cambodia
Kill tally details: One to three million (or between a quarter and a third of Cambodia's population)
Saddam Hussein
Country: Iraq
Kill tally details: Over 1.5 million, including up to 340,000 Iraqi and 730,000 Iranian combatants killed during the Iran-Iraq War. An estimated 1,000 Kuwaiti nationals killed following the Iraqi invasion of Kuwait. Up to 200,000 Iraqis killed during the First Gulf War. As many as 200,000 or more Iraqis killed as a consequence of the Second Gulf War. As many as 300,000 Iraqi dissidents, Shia Muslims and Kurds killed during Saddam's reign
Suharto
Country: Indonesia
Kill tally details: Up to two million killed following an alleged coup attempt in 1965 (most reports estimate the number at around 500,000). Over 250,000 deaths following the invasion of Timor-Leste (East Timor) in 1975. Thousands more killed in various Indonesian provinces
Ismail Enver Pasha
Country: Turkey (the heartland of the former Ottoman Empire)
Kill tally details: In the period 1914-1918, between 600,000 and 1.5 million Armenians killed, up to 300,000 Greeks killed or deported, about 100,000 Assyrians killed