The MS Louis Majesty (formerly MS Norwegian Majesty) is a cruise ship owned and operated by Louis Cruise Lines. She was originally ordered by Birka Line as MS Birka Queen from the Wärtsilä Marine Turku Shipyard in Finland but completed by Kvaerner Masa-Yards as MS Royal Majesty for Majesty Cruise Line. In 1997 she was sold to Norwegian Cruise Line and lengthened by 33.76 m (110 ft 9 in) at the Lloyd Werft shipyard in Bremerhaven Germany.
Builders of the MS Louis Majesty are Finland, STX Finland Cruise Oy, Turku and Wärtsilä.