William Templeton Johnson
William Templeton Johnson (1877 – 1957) was a notable San Diego architect. He was a fellow to the American Institute of Architects (AIA) in 1939.
Johnson is known for his Spanish Revival buildings, all in San Diego unless otherwise noted:
- La Jolla Public Library, now the Athenaeum Music & Arts Library, 1921
 - Fine Arts Gallery in Balboa Park in 1932, now the San Diego Museum of Art, 1926
 - La Valencia Hotel, La Jolla, 1926
 - The San Diego Trust & Savings Bank at Sixth and Broadway, 1928
 - The Serra Museum in Presidio Park, 1929
 - three buildings (one extant) for the Ibero-American Exposition of 1929, Seville, Spain
 - The Mabel Shaw Bridges Music Auditorium, Pomona College, Claremont, California
 - The San Diego Natural History Museum, also in Balboa Park, 1932
 - The San Diego County Administration Center (with other architects)