Carnival Ecstasy was a Fantasy-class cruise ship operated by Carnival Cruise Line. Built by Kværner Masa-Yards at its Helsinki New Shipyard in Helsinki, Finland, she was floated out on January 6, 1991, and christened by television hostess, entertainer and long time Carnival spokesperson Kathie Lee Gifford. Her inaugural voyage began on April 2, 1991. During 2007, in common with all of her Fantasy-class sisters, she had the prefix Carnival added to her name. With the departure of the Carnival Fantasy in 2020, the Carnival Ecstasy became the oldest ship in the fleet until her retirement in October 2022. She was replaced by Carnival Spirit out of Mobile, Alabama in October 2023.

The Fantasy class is a cruise ship class operated by Carnival Cruise Lines. The first vessel of the class, Carnival Fantasy, entered service in 1990. All eight vessels of the class were constructed by Kvaerner Masa-Yards, in Helsinki, Finland, at the Hietalahti shipyard.