Paul R. Williams (born February 18, 1894, Los Angeles, California, U.S.—died January 23, 1980, Los Angeles) was an American architect noted for his mastery of various styles and building types and his influence on the architectural landscape of southern California. In more than 3,000 buildings over five decades, mostly in and around Los Angeles, he introduced a sense of casual elegance that defined the region’s architecture. His work became so popular with Hollywood royalty that he was known as the “architect to the stars.”