USS Douglas A. Munro (DE-422) was a John C. Butler-class destroyer escort acquired by the U.S. Navy during World War II. The primary purpose of the destroyer escort was to escort and protect ships in convoy, in addition to other tasks as assigned, such as patrol or radar picket.

The John C. Butler class were destroyer escorts that originated during World War II. The lead ship was USS John C. Butler, commissioned on 31 March 1944. The class was also known as the WGT type from their Westinghouse geared turbine drive. Of the 293 ships originally planned, 206 were canceled in 1944 and a further four after being laid down; three were not completed until after the end of World War II.