Anna Forbes Liddell (December 6, 1891 — August 30, 1979[1]) was an American academic and feminist, active in the suffrage movement in North Carolina as a young woman, and a Robert O. Lawton Distinguished Professor of Philosophy at Florida State University.

In 1913, Forbes Liddell and Susanne Bynum organized the North Carolina Equal Suffrage League.

She headed the Department of Philosophy and Religion, and was selected as the Robert O. Lawton Distinguished Professor of the Year at Florida State, in 1959.

[7] She was the first Southern woman philosopher on the program at the International Congress of Philosophy when it was held in Prague in 1934.

[9] In the 1970s, in her eighties and using a wheelchair, Liddell testified for the Equal Rights Amendment in the Florida House of Representatives.