Ilse Hollweg (23 February 1922 – 9 February 1990) was a German operatic coloratura soprano. A member of the Deutsche Oper am Rhein, she appeared at major European opera houses and festivals including the Bayreuth Festival and the Glyndebourne Festival. 　　Born in Solingen, Hollweg studied voice at the Musikhochschule Köln with Gertrude Förstel. She sang the solo in Ein deutsches Requiem by Brahms already in 1939. She made her debut in 1943 at the Theater Saarbrücken (de) as Blonde in Mozart's Die Entführung aus dem Serail. In 1946 she became first coloratura soprano at the Deutsche Oper am Rhein where she was a member until 1970. In 1951 she took part in the premiere there of Winfried Zillig's Troilus und Cressida.