The USS Spector (NCC-65549) was an Akira-class heavy cruiser in service in the late 24th century.
In 2374, the Spector was one of several starships that were assigned to recapture the USS Prometheus after it fell into the hands of the Tal Shiar. (VOY episode: "Message in a Bottle"; ST reference: Star Trek Fact Files; Decipher module: Starfleet Operations Manual)