Sonja Tallis (born 24 September 1943) is an Australian actress, singer and drama teacher.

Tallis began her showbiz career as a folk singer, touring as part of a duo called "Sean & Sonja", before moving onto acting. After acting in serial The Young Doctors, she had a small role in Sons and Daughters, before going onto her best-known role, as top dog, Nora Flynn, in Prisoner which she played for six months between May and November 1985.