Månefestivalen (The Moon Festival) is a charming and colorful music festival in the Old Town (Gamlebyen) in Fredrikstad.

The main stage is at "Tøihusplassen" and is the only arena where tickets are required. The rest of Gamlebyen is open to everyone and offers a lively festival atmosphere with free music venues, shops and restaurants. In the King’s square there are market stalls, organic food, voluntary organizations, entertainment and music.