Jerry Seinfeld Jerry Seinfeld Creator, Actor, Writer Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Julia Louis-Dreyfus Elaine Benes Actor Wayne Knight Newman Guest Star Barney Martin Morty Guest Star John O'Hurley J. Peterman Guest Star Daniel von Bargen Kruger Guest Star Kathy Griffin Sally Weaver Guest Star Patrick Warburton David Puddy Guest Star Liz Sheridan Helen Guest Star Gordon Jump David Puddy Guest Star Bart Braverman Zubin Guest Star John Pinette Guest Star Daniel Dae Kim Student 1 Guest Star Wayne Wilderson Walter Guest Star Heidi Swedberg Actor Carol Kiernan Mother Guest Star Estelle Harris Actor Jerry Stiller Actor Andy Ackerman Director Larry David Executive Producer, Writer George Shapiro Executive Producer Howard West Executive Producer Dan O'Keefe Writer Alec Berg Writer Spike Feresten Writer Steve Koren Writer Gregg Kavet Writer Jennifer Crittenden Writer Jeff Schaffer Writer Billy Kimball Writer Peter Mehlman Writer Andy Robin Writer David Mandel Writer Darin Henry Writer Marc Jaffe Writer