Rudolph I of Austria (1218 - 1291) was the King of Germany from 1271 until 1291, the Duke of Austria from 1278 until 1282, the Duke of Carinthia from 1276 until 1286, Margrave of Carniola from 1276 until 1282, the Count of Habsburg (as Rudolph IV) from 1239 until 1291, and the Count of Löwenstein from 1281 until 1282.