Meryl Streep (Donna Sheridan), Amanda Seyfried (Sophie Sheridan), Pierce Brosnan (Sam Carmichael), Colin Firth (Harry Bright), Stellan Skarsgård (Bill Anderson), Julie Walters (Rosie Mulligan), Christine Baranski (Tanya Chesham-Leigh), Dominic Cooper (Sky), George Georgiou (Panos), Juan Pablo Di Pace (Petros), Norma Atallah (Irini), Niall Buggy (Vater Alex), Nancy Baldwin (Sams Assistentin), Colin Davis (Harrys Fahrer), Heather Emmanuel (Harrys Haushälterin), Myra McFadyen (Elena), Ricardo Montez (Stannos), Mia Soteriou (Arina), Chris Jarvis (Eddie), Rachel McDowall (Lisa), Hémi Yeroham (Dimitri), Jane Foufas (Elpida), Leonie Hill (Ariana), Maria Lopiano (Ione), Philip Michael (Pepper), Enzo Squillino Jr (Gregoris), Dylan Turner (Stag), Ashley Lilley (Ali)