Mamma Mia!
West End promotional poster
Music	Benny Andersson Björn Ulvaeus
Lyrics	Benny Andersson Björn Ulvaeus
Book	Catherine Johnson
Basis	ABBA discography
Premiere	6 April 1999: Prince Edward Theatre, London
Productions	1999 West End 2000 1st North America tour 2001 Broadway 2002 2nd North America tour 2016 1st UK tour 2016 3rd North America tour 2019 2nd UK tour 2023 25th Anniversary US tour 2025 Broadway revival

Mamma Mia! (promoted as Benny Andersson & Björn Ulvaeus' Mamma Mia!) is a jukebox musical written by British playwright Catherine Johnson, based on songs recorded by Swedish group ABBA and composed by members Benny Andersson and Björn Ulvaeus. The musical's title is taken from the group's 1975 chart-topper "Mamma Mia". Ulvaeus and Andersson were involved in the development of the show from the beginning, while singer Anni-Frid Lyngstad was involved financially in the production and also appeared at many of the premieres around the world.

The musical includes hits such as "Super Trouper", "Lay All Your Love on Me", "Dancing Queen", "Knowing Me, Knowing You", "Take a Chance on Me", "Thank You for the Music", "Money, Money, Money", "The Winner Takes It All", "Voulez-Vous", "SOS" and "Mamma Mia". Over 70 million people have seen the show, which has grossed $4.5 billion worldwide since its 1999 debut.^[1] A film adaptation starring Meryl Streep, Colin Firth, Pierce Brosnan, Amanda Seyfried, Christine Baranski, Stellan Skarsgård and Julie Walters was released in 2008.

As of 2024, the show has productions in London's West End, where it is the fifth longest-running show in West End history and the third longest-running musical,^[2] as well as various foreign productions. Its Broadway incarnation closed on 12 September 2015 after running for nearly 14 years, making it the ninth longest-running show in Broadway history.