Bu Wancang (July 1, 1900 – December 30, 1973), also known by his English name Richard Poh, was a prolific Chinese film director and screenwriter active between the 1920s and the 1960s.

Originally a member of the Shanghai cinema scene, Bu worked for several studios before becoming a major director for the Mingxing Film Company.

By 1931, Bu moved to Mingxing's rival, Lianhua, where he directed such films as Love and Duty (1931) and The Peach Girl (1931) (both with actress Ruan Lingyu).

As the war with Japan intensified Bu made several films with subtle patriotic themes, most notably 1939's Mulan Joins the Army.

Once Japanese control over Shanghai was complete, however, Bu was eventually forced to make several propaganda films for the occupiers, notably Eternity in 1943.