Catherine of Austria (German: Katharina von Habsburg; French: Catherine d'Autriche; 9 February 1320 – 28 September 1349) was the daughter of the Habsburg Duke Leopold I of Austria and the wife successively of the French nobleman Enguerrand VI, Lord of Coucy and the German Konrad von Hardeck, Burgrave of Magdeburg.

On their father's side, the two were granddaughters of Albert I of Germany, while their maternal grandparents were Amadeus V, Count of Savoy and his second wife Maria of Brabant.

[1] Her father died when Catherine was 6 years of age, and she and 4-year-old Agnes were placed under the guardianship of their paternal uncles, Frederick the Fair and Albert II, Duke of Austria.

Their son Enguerrand succeeded his father as Lord of Coucy, and he later married Isabella, eldest daughter of King Edward III of England.

The couple were married for just over a year when Konrad succumbed to the Black Death on 25 September 1349, Catherine herself dying three days later; she was buried at Königsfelden.