Hildegard Zadek (15 December 1917 – 21 February 2019) was a German operatic soprano. She was Kammersängerin at the Vienna State Opera. She was born in Bromberg, Province of Posen. She turned 100 on 15 December 2017.
Zadek died in Karlsruhe on 21 February 2019 at the age of 101.