Kit Mouat (1 March 1920 – 3 September 1986 was an English poet, author and secular humanist activist and editor. She worked and wrote under the pseudonym "Kit Mouat" to protect her diplomat husband, She also used the names Jane MacKay and Jean MacKay, and Catharine Lund.
Mouat was the first secretary of the Agnostics Adoption Bureau, which was later renamed the Independent Adoption Society, and founded the Humanist Letter Network. Mouat edited the secularist journal The Freethinker August 1966 – January 1967. According to The Freethinker's historian, Jim Herrick, she introduced personal articles from readers describing "How I Became a Humanist" and invited much discussion of the role of humanism.