USS Matagorda (AVP-22/AG-122) (/ˈmætəˈɡɔːrdə/ ⓘ[1]) was a United States Navy Barnegat-class seaplane tender in commission from 1941 to 1946 that saw service in World War II.

After returning to Boston, Matagorda joined Patrol Wings Atlantic (PatWingLant) and loaded torpedoes and ordnance stores at Newport, Rhode Island.

After loading aviation supplies at Norfolk, Virginia, Matagorda arrived at San Juan, Puerto Rico, on 11 February 1943.

She operated primarily out of Puerto Rico until early August 1943, escorting merchant ships and transporting ordnance and aviation supplies to bases in the Caribbean.

She carried men and cargo to Pembroke and Bristol, England, and made escort and supply runs to Casablanca, French Morocco, and Gibraltar.

Until the beginning of April 1945, she conducted extensive training and supply operations and ranged Brazilian waters from Belém to Florianópolis.

Converted back into a seaplane tender and once again designated AVP-22 as of 10 September 1945, Matagorda departed New York City for Norfolk on 17 October 1945.

Arriving there on 5 November 1945 for inactivation, she was decommissioned on 20 February 1946 and laid up in the Atlantic Reserve Fleet's Texas Group at Orange.

Barnegat-class ships were very reliable and seaworthy and had good habitability, and the Coast Guard viewed them as ideal for ocean station duty, in which they would perform weather reporting and search and rescue tasks, once they were modified by having a balloon shelter added aft and having oceanographic equipment, an oceanographic winch, and a hydrographic winch installed.

Matagorda's primary duty during her Coast Guard service was to serve on ocean stations to gather meteorological data.

Matagorda herself sustained damage; she was relieved by the Coast Guard cutter USCGC Bering Strait (WAVP-382) on 13 January 1965 and proceeded to Hawaii, via Midway, in heavy seas.