Catherine of Austria (1420 in Wiener Neustadt – 11 September 1493 at Hohenbaden Castle in Baden-Baden) was a member of the House of Habsburg and through marriage Margravine of Baden.

Catherine's older brother Frederick III was crowned Holy Roman Emperor in 1452.

She grew up in Wiener Neustadt, together with her brothers Frederick III and Albert VI.

[2] Catherine married Margrave Charles I of Baden-Baden (1427-1475) in Pforzheim 15 July 1447.

[5] Catherine outlived her husband, with whom she was joined in tender marriage for 18 years.