Jerry Seinfeld Jerry Seinfeld Creator, Actor Julia Louis-Dreyfus Elaine Benes Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Heidi Swedberg Susan Ross Guest Star John O'Hurley J. Peterman Guest Star Wayne Tippit Captain Guest Star Lewis Arquette Leapin' Larry Guest Star Fred Stoller Fred Yerkes Guest Star Ellen Albertini Dow Momma Guest Star David St. James Doctor Guest Star Michael Luckerman Man Guest Star Von Roddy Desota Guest Star Estelle Harris Actor Jerry Stiller Actor Larry David Executive Producer George Shapiro Executive Producer Howard West Executive Producer