* Louise Pitre as Donna Sheridan
* Siobhán McCarthy as Rosie Mulligan
* Kate Robbins as Tanya Chesham-Leigh
* Liza Walker as Sophie Sheridan
* Hilton McRae as Sam Carmichael
* Benny Andersson as Harry Bright
* Björn Ulvaeus as Bill Austin
* Tommy Körberg as Sky Rydell
* James Gaddas as Eddie
* Paul Clarkson as Pepper
Original Broadway Cast (2001)
* Elaine Paige as Donna Sheridan
* Judy Kaye as Rosie Mulligan
* Liz Robertson as Tanya Chesham-Leigh
* Louise Pitre as Sophie Sheridan
* David Soul as Sam Carmichael
* Kenneth Riegel as Harry Bright
* Neil Patrick Harris as Bill Austin
* Stellan Skarsgård as Sky Rydell
* Gabriel Barre as Eddie
* Joe Machota as Pepper
2018 London Revival Cast
* Tamsin Carroll as Donna Sheridan
* Sara Poyzer as Rosie Mulligan
* Jacqueline Dankworth as Tanya Chesham-Leigh
* Lucy May Barker as Sophie Sheridan
* Richard Trinder as Sam Carmichael
* Miles Richardson as Harry Bright
* Alistair Brammer as Bill Austin
* Daniel Doesborg as Sky Rydell
* Christopher Jordan as Eddie
* Matt Krzanich as Pepper