* Sally Bowles: An exuberant and sexually free-spirited cabaret performer.
* Clifford Bradshaw: A young American writer drawn to the allure of Berlin's nightlife.
* Ernst Ludwig: A wealthy and debonair German playboy who becomes Sally's admirer.
* Fraulein Schneider: The middle-aged landlady of the boarding house where Sally and Clifford live.
* Herr Schultz: Fraulein Schneider's elderly Jewish neighbor.
* The Kit Kat Girls and Boys: The energetic and flamboyant performers at the Kit Kat Club.
* The Emcee: The charismatic master of ceremonies at the Kit Kat Club, known for his provocative and subversive acts.