Jan Cornall (born 17 August 1950) is an Australian singer, comedian and writer.
Known for her contributions to queer music through the group Baba Yaga during the 1970s and the hit musical Failing in Love Again (1979), Jan Cornall was a leader in the women's comedy and cabaret resurgence of the early 1980s.
She has contributed to Australian community theatre, addressing issues facing regional and rural women, and had a long involvement in forging cross cultural links with Indonesian and Australian writers and artists.