Seinfeld (1989) Cast & Character Guide — No Spoilers | Who's That?
Who plays who in Seinfeld (1989)? Browse a spoiler-free character guide with photos of every major character and the actors behind them, including Jerry Seinfeld, Jason Alexander, Michael Richards.
- Jerry Seinfeld — played by Jerry Seinfeld
- George Costanza — played by Jason Alexander
- Cosmo Kramer — played by Michael Richards
- Elaine Benes — played by Julia Louis-Dreyfus
- Ruthie Cohen (uncredited) — played by Ruth Cohen
- Newman — played by Wayne Knight
- George Steinbrenner (voice) / George Steinbrenner / John F. Kennedy Jr. / Man on Raft #1 / Subway Announcer (voice) / George Steinbrenner / Prisoner (voice) / The Car Thief (voice) / Soap Opera Director (voice) / Country Club MC (voice) / Sports Commentator / Limo Dispatcher (voice) / Newman (voice) / Saddam Hussein (voice) / Man At Softball Game (voice) / Man in Hallway / Offstage Voice (voice) / Police Officer (voice) / Man on Beach (voice) / Boxing Referee on TV (voice) / Newsstand Owner (voice) / Man with Cape / Airport Announcer (voice) / Character in Checkmate (voice) / Office Worker / Steinbrenner / Man on the Street (voice) / Man at Table (voice) (uncredited) / Heckler (voice) / Kosher Meal Passenger (voice) — played by Larry David
- Susan Ross — played by Heidi Swedberg
- Man on Sidewalk / Man in Bar / Man In Store / Man on 'Jerry' Set / Man on Bus / Passerby / Man at Airport / Man Walking Into Elevator / Coworker / Man Waiting in Restaurant (uncredited) / Man in Library / Man / Clerk / Manager / Man in Restaurant / Man In Coffee Shop / Man Sitting In Diner / Man In Party / Rider / Moviegoer / Ian / Orderly / Beder / Chef — played by Norman Brenner
- Estelle Costanza — played by Estelle Harris
- Frank Costanza — played by Jerry Stiller
- Helen Seinfeld — played by Liz Sheridan
- Morty Seinfeld — played by Barney Martin
- J. Peterman — played by John O'Hurley
- Uncle Leo — played by Len Lesser
- Wilhelm — played by Richard Herd
- Scott / Man In Coffee Shop (uncredited) / Customer Being Robbed / Bill / Angry Man (voice) / Bartender / Mitch / Reporter #2 / Man in Video Store / Man / TMI Long Distance Operator / Security Guard / Delivery Man — played by Deck McKenzie
- Office Worker / Woman on 'Jerry' Set / Waitress / Reporter #1 / Nurse / Card Player / Receptionist (voice) / Bystander #1 / Waitress #2 — played by Peggy Lane
- George Steinbrenner — played by Lee Bear
- David Puddy — played by Patrick Warburton