USS Firm (AM-444/MSO-444) was an Aggressive-class minesweeper in the United States Navy.

From her home post at Long Beach, California, headquarters for Mine Force, Pacific Fleet, Firm sailed for training and exercises along the west coast, interrupted during 1955 for her conversion to flagship for Mine Division 94.

Between 1 March 1956 and 2 November 1956, and again between 3 November 1958 and 31 May 1959, she served in the Far East with the 7th Fleet, exercising with ships of the Korean, Chinese Nationalist, and Thai navies, as well as visiting a wide number of Oriental ports and taking part in fleet training schedules.

Beginning in April 1965, USS Firm was assigned to Operation Market Time, a program instituted to curb the Communist infiltration of arms and other contraband into South Vietnam during the Vietnam War.

Returned to United States custody on 1 July 1977, the ship was struck from the Naval Vessel Register the same day, and on 8 July sold for scrapping to Ming Hing and Co., Kowloon, Hong Kong.