USS Knave (AM-256) was an Admirable-class minesweeper built for the United States Navy during World War II.

Knave was launched 13 March 1943, by American Shipbuilding Co., Lorain, Ohio; sponsored by Mrs. Geraldine Donohue; and commissioned 14 October 1943.

After a brief period as school ship at Little Creek, Virginia, Knave departed Hampton Roads for Rio de Janeiro via Trinidad, B.W.I., and Recife, Brazil, arriving 11 February 1944.

She swept Brazilian waters until 4 April when she began 9 months of escorting convoys between Trinidad and Recife.

A ship by the same name "Juan Escutia' was scuttled as an artificial reef just off the coast of the Yucatán peninsula near the town Puerto Morelos.