Jerry Seinfeld Jerry Seinfeld Actor, Writer Julia Louis-Dreyfus Elaine Benes Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Annie Korzen Doris Klompus Guest Star Wayne Knight Newman Guest Star Jerry Stiller Frank Costanza Guest Star Estelle Harris Estelle Costanza Guest Star Barney Martin Morty Seinfeld Guest Star Liz Sheridan Helen Seinfeld Guest Star Sandy Baron Klompus Guest Star Mike Hagerty Rudy Guest Star Dorien Wilson Alec Guest Star Steve Pearlman Mr. Goldstein Guest Star Judge Reinhold Aaron Guest Star Melanie Smith Rachel Guest Star Larry David Executive Producer, Writer George Shapiro Executive Producer Howard West Executive Producer Tom Gammill Writer Max Pross Writer Tom Cherones Director