The following is a list of massacres that have occurred in Slovenia or its territory (numbers may be approximate):
| Name | Date | Location | Deaths | Notes |
|---|---|---|---|---|
| Marburg's Bloody Sunday | 27 January 1919 | Maribor | 9 – 13 civilians of German ethnic origin | Possibly accidental or German provoked |
| Dražgoše massacre | 11 January 1942 | Dražgoše | 41 Slovenian civilians | After the Battle of Dražgoše, German troops killed 41 villagers |
| Celje prison massacre | 22 July 1942 | Stari Pisker, Celje | 100 Slovenian civilians | Mass execution of hostages carried out by German occupation forces [1] |
| Maribor prison massacre | 2 October 1942 | Maribor | 143 Slovenian civilians | |
| Turjak massacre | September 1943 | Turjak Castle, Province of Ljubljana | 115–1,000 | 115–1,000 POWs killed in aftermath by Partisans |
| Frankolovo crime | 12 February 1945 | Frankolovo | 100 Slovenian civilians | Members of the Wehrmacht killed one hundred Slovene civilians |
| Tezno massacre | 19–26 May 1945 | Tezno, PR Slovenia | 15,000 | Mass killing of POWs and civilians of the Independent State of Croatia (NDH) by units of the Yugoslav Partisans |
| Marija Reka massacre | 9 May - 6 August 1945 | Marija Reka, Municipality of Prebold | 3,000 [2] | Post-war massacres occurred in Marija Reka (near Prebold and Trbovelje). 3,000 people were killed without trial. |
| Pečovnik Mine massacre | May 1945 | Pečovnik Mine, Zvodno | 12,000 Croats civilians | Yugoslav Partisans killed 12,000 Croats by forcing them into the mine and covering them with concrete |
| Teharje camp | May 1945 - October 1946 | Teharje | 5,000 | It is estimated that the postwar authorities executed approximately 5,000 internees of Teharje without trial during the first month or two after the Second World War |
| Sterntal camp | May - October 1945 | Kidričevo | 5,000 | |
| Barbara Pit massacre | 25 May – 6 June 1945 | Huda Jama, PR Slovenia | 1,416 | Mass killing of prisoners of war of Ante Pavelić's NDH Armed Forces and the Slovene Home Guard, as well as civilians, after the end of World War II in Yugoslavia in an abandoned coal mine near Huda Jama, by the Yugoslav Partisans |
| Lokavec massacre | 20 June 1945 | Lokavec, Ajdovščina | 5 - 7 Slovenian civilians | Murders of five to seven Slovenian civilians |