William Henry Dougal (January 30, 1822 - October 17, 1895) was an American artist and engraver. Born in New Haven, Connecticut, Dougal was apprenticed to Sherman and Smith, New York City-based engravers, at the age of 15. He was working independently as an engraver in Washington, D.C. by 1844, receiving his first large commission to engrave the plates for the reports of the Wilkes expedition. He spent 1849-1850 in San Francisco as the owner and operator of a livery and grocery store. Dougal returned to Washington, D.C. by late 1850, where he worked for the Bureau of Printing and Engraving, a position he held until his death in 1895. Dougal married Mary Virginia Adler in 1851, with whom he had seven children.