Leopold IV was the seventh Margrave of Austria. He ruled for just five years in the 12th Century.

He was born in 1108, the son of the sixth Margrave of Austria, Leopold III and Agnes of Germany. The younger Leopold was 28 when his father died, in 1136. The younger Leopold became margrave and also inherited land, wealth, and standing from the German king Conrad III. At the time, the King of the Romans, as the German was then often called, was struggling to keep his crown against a succession of opponents.

Those struggles didn't intrude much on life in Austria, as the reign of Leopold IV was relatively peaceful. He died on Oct. 18, 1141, at Niederaltaich Abbey in Bavaria. He had not married and had no children, so his successor was his brother Henry.