Anna Kendrick as Beca Mitchell, a reclusive girl who wants to pursue a music career; she joins the Barden Bellas to please her father and finds herself being caught up in their world.
Skylar Astin as Jesse Swanson, a member of the Treblemakers who has a crush on Beca.
Rebel Wilson as Fat Amy, a comedic and irresponsible member of the Bellas from Tasmania.
Anna Camp as Aubrey Posen, the uptight and traditionalist co-leader of the Bellas; when she vomited at Nationals, she ruined the Bellas' chance at winning the previous year.
Brittany Snow as Chloe Beale, the kinder and more civil co-leader of the Bellas.
Ester Dean as Cynthia-Rose, a member of the Bellas, a misunderstood lesbian.
Alexis Knapp as Stacie Conrad, a highly sexual member of the Bellas.
Hana Mae Lee as Lilly Onakuramara, an Asian member of the Bellas who speaks too quietly to be heard.
Ben Platt as Benji Applebaum, Jesse's nerdy roommate and an illusionist, who is rejected from the Treblemakers, and is later accepted.
Adam DeVine as Bumper Allen, the egotistical leader of the Treblemakers.
John Michael Higgins as John Smith, a misogynistic commentator for the ICCAs.
Elizabeth Banks as Gail Abernath-McKadden, a commentator for the ICCAs.
Utkarsh Ambudkar as Donald, Bumper's right-hand man, who beatboxes, raps, and is a main vocalist.
Freddie Stroma as Luke Morgan, the radio station manager who plays Beca's DJ mixes on the air.
Christopher Mintz-Plasse as Tommy, the university's constantly harassed audition launcher.
Jinhee Joung as Kim Hee-Jin, Beca's unfriendly Korean roommate.
John Benjamin Hickey as Dr. Mitchell, Beca's father, a professor at the college who insists that she attends.