Erna Denera (4 September 1881 – 16 March 1938) was a German operatic soprano and voice teacher. She was a member of the Berliner Hofoper (Berlin Royal Opera), from 1908 to 1921 and was awarded the title Kammersängerin.
Denera was born in Murowana-Goslin, Province of Posen, Prussia (Murowana Goślina, Poland), she died in Berlin at age 56.