Frederick Rice Dorn

The Broadway Department Store's Downtown Los Angeles flagship in the Hallett & Pirtle Building around 1908–1910
Broadway Hollywood Building seen from Hollywood and Vine streets, 2016

Frederick Rice Dorn (b. c. 1866 – d. May 19, 1934) was an American architect based in Los Angeles, California. He was involved in numerous commercial and residential projects in the city during the late 19th and early 20th centuries.