Frederick I (German: Friedrich I. von Österreich), known as Frederick the Catholic (German: Friedrich der Katholische), was the Duke of Austria from 1195 to 1198. He was a member of the House of Babenberg.
In 1192, he was enfeoffed with his father with Austria and Styria, while the younger Leopold VI had no claim. On Leopold V's death-bed, at Graz, he caught all by surprise by granting the Duchy of Styria to Leopold VI, with Emperor Henry VI's approval. None raised objections and thus, Austria and Styria remained divided.
Duke Frederick left Austria in April or late spring 1197 for the German Crusade of 1197 in the company of Wolfger, Bishop of Passau and his uncle, Henry I, Duke of Mödling. In September, they sailed under the leadership of Conrad, Archbishop of Mainz & Chancellor of Germany from Messina and arrived weeks later to Acre. Frederick fell ill and died on April 16 while returning from Palestine at Acre.
Note: a later duke was also known as Frederick I of Austria (Frederick I the Fair, reigned 1308-1330).