Catherine Anthony Clark (5 May 1892–24 February 1977), was a British-born Canadian children's author.
Clark was born Catherine Anthony Smith in London in 1892 as one of eight children.
Clark began to write for The Prospector, a small newspaper in Nelson.
Her novels were usually set in Western Canada and used local myths and legends.
Her novel The Sun Horse won the Canadian Association of Children's Librarians bronze medal in 1952.