Jerry Seinfeld Jerry Seinfeld Creator, Actor Julia Louis-Dreyfus Elaine Benes Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Wayne Knight Newman Guest Star Len Lesser Uncle Leo Guest Star Richard Roat Dr. Berg Guest Star Fort Atkinson Dr. Stern Guest Star David Purdham Dr. Resnick Guest Star Heather Campbell Sheila Guest Star Ramon Franco Mailman Guest Star Bari K. Willerford Ron Guest Star Shuko Akune Receptionist Guest Star F. William Parker Country Doctor Guest Star Lyn Alicia Henderson Clerk Guest Star Heidi Swedberg Actor Estelle Harris Actor Jerry Stiller Actor Andy Ackerman Director Larry David Executive Producer George Shapiro Executive Producer Howard West Executive Producer