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 Wayne Knight Newman Guest Star Len Lesser Uncle Leo Guest Star Patrick Warburton David Puddy Guest Star Ian Abercrombie Justin Pitt Guest Star Reni Santoni Poppie Guest Star Gail Strickland Landis Guest Star Billye Ree Wallace Nana Guest Star Danny Tartabull Danny Tartabull Guest Star Barney Martin Morty Guest Star Lauren Bowles Waitress Guest Star Jessica Hecht Lindsay Guest Star Heidi Swedberg Actor Bryan Cranston Tim Whatley Guest Star Estelle Harris Actor Jerry Stiller Actor Bob Shaw Cabbie Guest Star Andy Ackerman Director D. Owen Trainor Director George Shapiro Executive Producer Tom Gammill Writer Carol Leifer Writer Alec Berg Writer Peter Mehlman Writer Bruce Kirschbaum Writer Howard West Executive Producer Max Pross Writer Marjorie Gross Writer Jeff Schaffer Writer Bill Masters Writer Sam Kass Writer Charlie Rubin Writer