- Urnfield culture (1300 - 750 BC)
- Hallstatt culture (1200 - 500 BC)
- La Tene culture (450 - 1st century BC)
- Roman invasion (1st century BC)
- Ostrogothic Kingdom (469 - 553 AD)
- Carantania (658 - 828 AD)
- Holy Roman Empire (800 - 1806 AD)
- Habsburg dynasty (1282-1918)
- Ottoman-Habsburg wars (1526-1791)
- French Illyrian Provinces (1809-1814)
- Austrian Illyria Kingdom (1816-1849)
- Austria-Hungary (1867-1918)
- World War I (1914-1918)
- Republic of Prekmurge (1919)
- World War II (1939-1945)
- Yugoslavia (1918-1941, 1945-1991)
- Ten-Day War (1991)
- Slovenia gains independence (1991)
- Slovenia joins the European Union (2007)
(This post includes any nation or civilization that occupied at least a portion of Slovenia at some point. Unless specified otherwise, the dates correspond to when a nation or civilization existed, but do not necessarily correspond to occupation of Slovenia.)
