Zoe Caldwell, OBE (born 14 September 1933) is an Australian actress.
She was born as Ada Caldwell in Melbourne, Australia and was raised in the suburb of Balwyn in Yongala Street. Her father, Edgar, was a plumber and her mother, Zoe, was ataxi dancer. Caldwell's mother often took some of the neighbourhood kids to the Elizabeth an Theatre in Richmond where they could go backstage and watch rehearsals and performances.
Caldwell was married in 1968 to Canadian-born Broadway producer Robert Whitehead, a cousin of actor Hume Cronyn. They had two sons and were married until Whitehead's death in June 2002.
The novelist Patrick White dedicated his short story, Clay to her and Barry Humphries.