This is a list of people who have ruled either the Margraviate of Austria, the Duchy of Austria or the Archduchy of Austria. From 976 until 1246, the margraviate and its successor, the duchy, was ruled by the House of Babenberg. At that time, those states were part of the Holy Roman Empire. From 1246 until 1918, the duchy and its successor, the archduchy, was ruled by the House of Habsburg. Following the defeat of Austria-Hungary in World War I, the titles were abolished or fell into abeyance with the erection of the modern Republic of Austria. Margraves of Austria The March of Austria, also known as Marcha Orientalis, was first formed in 976 out of the lands that had once been the March of Pannonia in Carolingian times. The oldest attestation dates back to 996, where the written name "ostarrichi" occurs in a document transferring land in present-day Austria to a Bavarian monastery. House of Babenberg |width=auto| Leopold I the Illustrious(Luitpold der Erlauchte)976–994 | | c. 940 | Richardis of Sualafeldgaunine children | 10 July 994Würzburgaged about 54 |- |width=auto| Henry I the Strong(Heinrich der Starke)994–1018 | | late 10th centuryson of Leopold I and Richardis of Sualafeldgau | never married | 23 June 1018 |- |width=auto| Adalbert I the Victorious(Adalbert der Siegreiche)1018–1055 | | c. 985son of Leopold I and Richardis of Sualafeldgau | (1) Glismod of West-Saxonyno issue(2)Frozza Orseoloone issue | 26 May 1055Melkaged about 70 |- |width=auto| Ernest the Brave(Ernst der Tapfere)1055–1075 | | c. 1027son of Adalbert and Frozza Orseolo | (1) Adelaide of Eilenburg1060three children(2) Swanhilde of Ungarnmark1072no issue | 10 June 1075aged about 48 |- |width=auto| Leopold II the Fair(Luitpold der Schöne)1075–1095 | | c. 1050son of Ernest and Adelaide of Eilenburg | Ida of Cham1065eight children | 12 October 1095aged about 45 |- |width=auto| Leopold III the Good(Luitpold der Heilige)1095–1136 | | c. 1073Melkson of Leopold II and Ida of Cham | (1) Maria of Pergno children(2) Agnes of Germany1106eighteen children | 15 November 1136Viennaaged about 63 |- |width=auto| Adalbert II the Devout(Adalbert der Andächtige)1136-1137 | | c. 1107son of Leopold III and Agnes of Germany | (1) Adelaide of Polandno children(2) Hedwig of Hungary1132no children | 9 November 1137Viennaaged about 30 |- |width=auto| Leopold IV the Generous(Luitpold der Freigiebige)1137–1141 | | c. 1108son of Leopold III and Agnes of Germany | Maria of Bohemia28 September 1138no issue | 18 October 1141Niederalteichaged