Jerry Seinfeld Jerry Seinfeld Creator, Actor, Writer Larry David Creator, Executive Producer, Writer Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Julia Louis-Dreyfus Elaine Benes Actor Estelle Harris Estelle Costanza Guest Star Veralyn Jones Renee Guest Star Judge Reinhold Aaron Guest Star Jerry Stiller Frank Costanza Guest Star Annie Korzen Doris Klompus Guest Star Liz Sheridan Helen Seinfeld Guest Star Hiram Kasten Michael Guest Star Sam Lloyd Ricky Guest Star Lisa Edelstein Karen Guest Star Wayne Knight Newman Guest Star Barney Martin Morty Seinfeld Guest Star Lisa Pescia Joanne Guest Star Sandy Baron Klompus Guest Star Marty Rackham Jake Guest Star Heidi Swedberg Actor Melanie Smith Rachel Guest Star Tom Cherones Director Tom Gammill Writer Larry Charles Writer Peter Mehlman Writer Carol Leifer Writer Charlie Rubin Writer Andy Robin Writer Bruce Kirschbaum Writer George Shapiro Executive Producer Max Pross Writer Lawrence Levy Writer Howard West Executive Producer Ron Hauge Writer Andy Cowan Writer