• 
  Howard Hawks

  regizor

• 
  Gary Cooper

  Prof. Bertram Potts
• 
  Barbara Stanwyck

  Katherine O'Shea
• 
  Pat Flaherty

  Ajutor
• 
  S.Z. Sakall

  Professor Magenbruch - Physiology
• 
  Leonid Kinskey

  Professor Quintana
• 
  Mary Field

  Miss Totten
• 
  Oskar Homolka

  Professor Gurkakoff - Mathematics

• 
  Addison Richards

  District Attorney
• 
  Bert Stevens

  Nightclub Patron
• 
  Kathleen Howard

  Miss Bragg
• 
  Tully Marshall

  Prof. Robinson
• 
  Charles Lane

  Larsen
• 
  Eddy Chandler

  Cop on Garbage Truck
• 
  Allen Jenkins

  Garbage Man

• 
  Richard Haydn

  Prof. Oddly
• 
  Elisha Cook Jr.

  Nightclub Waiter
• 
  Henry Travers

  Professor Jerome - History
• 
  Dana Andrews

  Joe Lilac
• 
  Dan Duryea

  Duke Pastrami
• 
  Aubrey Mather

  Professor Peagram - Literature
• 
  Ralph Peters

  Asthma Anderson