Larry David Creator, Executive Producer, Writer Jerry Seinfeld Jerry Seinfeld Creator, Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Barney Martin Morty Seinfeld Guest Star Kari Coleman Allison Guest Star Bob Balaban Russell Dalrymple Guest Star Liz Sheridan Helen Seinfeld Guest Star Gina Hecht Dana Foley Guest Star Jane Leeves Marla Penny Guest Star Kevin Page Stu Chermack Guest Star Peter Blood Jay Crespi Guest Star Len Lesser Uncle Leo Guest Star Peter Crombie Joe Davola Guest Star Julia Louis-Dreyfus Actor Wayne Knight Actor Elena Wohl Sandi Robbins (TV Elaine) Guest Star Heidi Swedberg Actor Estelle Harris Actor Stephen McHattie Psychiatrist Guest Star Jerry Stiller Actor Tom Cherones Director Larry Charles Writer Peter Mehlman Writer Steve Skrovan Writer Bruce Kirschbaum Writer Andy Robin Writer George Shapiro Executive Producer Bill Masters Writer Howard West Executive Producer Tom Leopold Writer Jon Hayman Writer