R/V Thomas G. Thompson (AGOR-23) is an oceanographic research vessel and lead ship of her class, owned by the United States Office of Naval Research and operated under a bareboat charterparty agreement by the University of Washington as part of the University-National Oceanographic Laboratory System (UNOLS) fleet.

Thomas G. Thompson (T-AGOR-9) was a Robert D. Conrad-class oceanographic research ship acquired by the U.S. Navy in 1965. The ship was transferred to the University of Washington for operation as part of the University-National Oceanographic Laboratory System (UNOLS) fleet on 21 September 1965. In 1988 the ship went out of UNOLS service. The ship, retaining the previous name, was designated by the Navy as IX-517 assigned to the Mare Island Naval Shipyard for general naval research. Thomas G. Thompson was later renamed Pacific Escort II with the same designation. On 7 May 1997 the Navy renamed the ship Gosport and transferred the ship to the Norfolk Naval Shipyard available for hire as a multi purpose platform from the shipyard. The ship, placed out of service and struck from the register on 27 February 2004, was sunk as part of a NATO exercise 14 November 2004.