Sonja Tallis (born 24 September 1943) is an Australian former 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.
She started her acting career in a guest role in television serial The Young Doctors, and then had a small role in Sons and Daughters,
Tallis would then go on to her best-known role, as a recurring character of top dog, Nora Flynn, in Prisoner which she played for six months between May and November 1985. She went on to a regular role in the short-lived Crawford's series Prime Time, as Georgina Jones, in 1986. She appeared in small guest roles in A Country Practice, Home and Away and McLeod's Daughters.
Tallis has taught drama, both privately and in a number of schools in Sydney.