Willis' Birthday is the twenty-second episode of Season 1 of Diff'rent Strokes. The episode was written by Michael G. Moye and directed by Herbert Kenwith. It originally aired on April 13, 1979 on NBC.
Willis wants to have his birthday party at a friend's house in Harlem, but Mr. Drummond is concerned about going there on a Saturday night.
- Conrad Bain as Phillip Drummond
- Gary Coleman as Arnold Jackson
- Todd Bridges as Willis Jackson
- Dana Plato as Kimberly Drummond
- Charlotte Rae as Edna Garrett
- Anthony Thompkins as Vernon
- Brian Salmon as Tiny
- Tony Williams as Charles
- LaShana Dendy as Francine (credited as LaShonna Dendy)
- Betty A. Bridges as Mrs. Brooks (credited as Betty Bridges)
- Carl M. Craig as The Policeman (credited as Carl Mathis Craig)
- Scorpio as Luther