Ann Gillis was an American actress.

She started her career in the early 1930s, when she was seven years old. After some smaller roles, she got her first major part in King of Hockey (1936). In the following years she played supporting roles, and her film studio, Warner Brothers, wanted her to be a second Shirley Temple, but most of the time she only played spoiled brats.

She played Becky Thatcher in David O. Selznick's The Adventures of Tom Sawyer (1938). She also provided the voice of Faline as an adult in Bambi (1942). She ended her film career in 1947.

Following her Hollywood career she turned to occasional television work. Gillis appeared in two episodes of The Saint in 1964 and 1965, followed by a small part in 2001: A Space Odyssey, playing Dr. Poole's mother.

Gillis died January 31, 2018, in Horam, East Sussex, England. She was 90.