Lily James (Young Donna Sheridan), Amanda Seyfried (Sophie Sheridan), Pierce Brosnan (Sam Carmichael), Colin Firth (Harry Bright), Stellan Skarsgård (Bill Anderson / Kurt Anderson), Christine Baranski (Tanya Chesham-Leigh), Julie Walters (Rosie Mulligan) more..., Alexa Davies (Young Rosie), Jessica Keenan Wynn (Young Tanya), Dominic Cooper (Sky Rymand), Cher (Ruby Sheridan), Andy Garcia (Señor Fernando Cienfuegos), Meryl Streep (Donna Sheridan), Jeremy Irvine (Young Sam Carmichael), Hugh Skinner (Young Harry Bright), Josh Dylan (Young Bill Anderson), Maria Vacratsis (Sofia), Celia Imrie (Vice Chancellor), Panos Mouzourakis (Lazaros), Omid Djalili (Greek Official), Gerard Monaco (Alexio), Anna Antoniades (Apollonia), Togo Igawa (Mr. Tatyama), Naoko Mori (Yumiko), Anastasia Hille (Dr. Inge Horvath), Susanne Barklund (Alma), Jonathan Goldsmith (Brother Rafael Cienfuegos), Björn Ulvaeus (University Professor (uncredited)), Benny Andersson (Cafe Pianist (uncredited)), Sharif Afifi (Ensemble Performer), Kathryn Akin (Ensemble Performer), Joe Allen (Ensemble Performer), Michael Anthony (Ensemble Performer), Wendy Baldock (Ensemble Performer), Caroline Bateson (Ensemble Performer), Omari Bernard (Ensemble Performer), Christopher Blades (Ensemble Performer), Hannah Bodenham (Ensemble Performer), Nicole Bondzie (Ensemble Performer), Teneisha Bonner (Ensemble Performer) and others.

Ol Parker (Writer), Benny Andersson (Executive Producer), Judy Craymer (Producer), Gary Goetzman (Producer), Björn Ulvaeus (Executive Producer), Robert D. Yeoman (Director of Photography), Adrian Bell (Sound Mixer) more..., Benny Andersson (Music), Björn Ulvaeus (Music), Peter Lambert (Editor), Dan Kenyon (Sound Effects Editor), Michael Minkler (Sound Re-Recording Mixer), Warren Shaw (Supervising Sound Editor), Richard Curtis (Story), Catherine Johnson (Story), Ludvig Andersson (Associate Producer), Nicky Kentish Barnes (Executive Producer), Nori Chia (Associate Producer), Richard Curtis (Executive Producer), Tom Hanks (Executive Producer), Phyllida Lloyd (Executive Producer), Steven Shareshian (Co-Executive Producer), Richard Whelan (Co-Producer), Rita Wilson (Executive Producer), Anne Dudley (Original Music Composer), John Frankish (Production Design), Alan MacDonald (Production Design), James Lewis (Art Direction), Louise Marzaroli (Art Direction), Andrew Palmer (Art Direction), Dominic Capon (Set Decoration), Michele Clapton (Costume Design), Greg Powell (Stunt Coordinator), Anna MacKenzie (ADR Editor), Julian Bucknall (First Assistant "A" Camera), Sarah Pasquali (Graphic Designer), Robert Palmer (First Assistant "B" Camera), Richard Whelan (First Assistant Director), Kindra Marra (First Assistant Editor), Pat Sweeney (Gaffer) and others.