Helga Josephine Zinnbauer, also known as Helga Freund-Zinnbauer, (24 February 1909 – 16 December 1980) was an Australian community worker and librarian.
Zinnbauer was born in Orsova, Austria-Hungary (now Or?ova, Romania) to Otto Alscher, a journalist, and his wife Else Leopoldine, née Amon.
She worked as a librarian in the Barr Smith Library from 1943 until her retirement in 1974.
She died in Adelaide, South Australia.Her husband was Alfred Freund-Zinnbauer, a Lutheran pastor.