Timothy Ludwig Pflueger (September 26, 1892 – November 20, 1946) was a prominent architect, interior designer and architectural lighting designer in the San Francisco Bay Area in the first half of the 20th century. Together with James R. Miller, Pflueger designed some of the leading skyscrapers and movie theaters in San Francisco in the 1920s, and his works featured art by challenging new artists such as Ralph Stackpole and Diego Rivera. Rather than breaking new ground with his designs, Pflueger captured the spirit of the times and refined it, adding a distinct personal flair. His work influenced later architects such as Pietro Belluschi.
Pflueger, who started as a working-class draftsman and never went to college, established his imprint on the development of Art Deco in California architecture yet demonstrated facility in many styles including Streamline Moderne, neo-Mayan, Beaux-Arts, Mission Revival, Neoclassical and International. His work as an interior designer resulted in an array of influential interior spaces, including luxurious cocktail lounges such as the Top of the Mark at the Mark Hopkins Hotel, the Patent Leather Bar at the St. Francis Hotel and the Cirque Room at The Fairmont, three of the most successful San Francisco bars in their day.
Pflueger's social and business connections spanned the city, including three private men's clubs which he joined: the Bohemian Club, the Olympic Club and The Family. He designed buildings and interior architecture for the latter two. Pflueger was highly placed in several important planning organizations: He was the chairman of a committee of consulting architects on the Bay Bridge project and he served on the committee responsible for the design of the Golden Gate International Exposition in 1939. Pflueger was a board member of the San Francisco Art Association starting in 1930, and served variously as chair and director. While on the board, Pflueger helped the organization found the San Francisco Museum of Modern Art (SFMOMA).