Two ships of the United States Coast Guard have been named USCGC Monomoy for the island off the coast of Cape Cod in Massachusetts.
- USCGC Monomoy (WAG-275), a commercial cargo ship acquired by the US Navy and known as USS Monomoy (AG-40), transferred to the Coast Guard 1943, scrapped 1951.
- USCGC Monomoy (WPB-1326), an Island-class patrol cutter commissioned in 1989.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.