USS Slater (DE-766) is a Cannon-class destroyer escort that served in the United States Navy and later in the Hellenic (Greek) Navy. Following service during World War II, the ship was transferred to Greece and renamed Aetos. Decommissioned in 1991, the destroyer escort was returned to the United States.

The Cannon class was a class of destroyer escorts built by the United States primarily for antisubmarine warfare and convoy escort service during World War II. The lead ship, USS Cannon, was commissioned on 26 September 1943 at Wilmington, Delaware. Of the 116 ships ordered, 44 were cancelled and six were commissioned directly into the Free French Forces. Destroyer escorts were regular companions escorting vulnerable cargo ships.