MV Mein Schiff 1 is a Century class cruise ship owned and operated by TUI Cruises. She was built in 1996 at the Meyer Werft shipyard in Papenburg, Germany as MV Galaxy for Celebrity Cruises, and renamed Celebrity Galaxy in 2008. In May 2009 she transferred to the fleet of TUI Cruises, a joint venture between Celebrity Cruises' owner Royal Caribbean Cruises Ltd. and TUI AG. The ship was renamed MV Mein Schiff (English: my ship) on 15 May 2009. In November 2010, she was renamed to Mein Schiff 1. In May 2011, the Celebrity Mercury has been restarted as Mein Schiff 2 for TUI Cruises.
The Mein Schiff, when still named Galaxy, was the setting of BBC television's docu-soap The Cruise, which made Jane McDonald famous.