Lilias Marianne Ar de Soif Farley (May 2, 1907 – August 2, 1989) was a Canadian painter, sculptor, designer, and muralist in realism and abstraction. In 1967, she was awarded the Centennial Medal for Service to the Nation in the Arts. She was an alumna of the Vancouver School of Decorative and Applied Arts (now the Emily Carr University of Art and Design) and was a member of the school's first graduating class.