USS Diploma (AM-221) was an Admirable-class minesweeper built for the United States Navy during World War II. She was awarded three battle stars for service in the Pacific during World War II. She was decommissioned in September 1946 and placed in reserve. While she remained in reserve, Diploma was reclassified as MSF-221 in February 1955 but never reactivated. In 1962, she was sold to the Mexican Navy and renamed ARM DM-17. In 1994 she was renamed ARM Cadete Francisco Márquez (C59). She was stricken in 2000, but her ultimate fate is not reported in secondary sources.