Timothy Ludwig Pflueger was an 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.

450 Sutter Street, also called the Four Fifty Sutter Building, is a twenty-six-floor, 105-meter (344-foot) skyscraper in San Francisco, California, completed in 1929. The tower is known for its "Neo-Mayan" Art Deco design by architect Timothy L. Pflueger. The building's vertically faceted exterior later influenced Pietro Belluschi in his similarly faceted exterior of 555 California, the former Bank of America Center completed in 1969.