The Entire Seinfeld Cast – A Definitive List

A little trivia… aside from the four main characters, the cast member featured in the most episodes was Ruth Cohen, aka, the cashier at Monk’s coffee shop.

Over the course of nine seasons Seinfeld introduced more than 1,200 characters, with the vast majority of them (93%) only appearing in two or less episodes. We’re talking some memorable ones too, like Izzy Mandelbaum, and Lloyd Braun.

Moving up, just 5% of the characters appear in 3-5 episodes, e.g. Russell Dalrymple, Tim Whatley. I always thought Whatley should have been included more. I wonder if Bryan Cranston will ever get the screen time he deserves?

That leaves just 2 percent to the ‘semi-regular’ characters (appearing in more than 5 episodes), such as Newman, Putty, and Frank Costanza. If you want, check out our ever growing list of Seinfeld characters spotlight where we take a look at some of their more memorable moments.

As you can tell, many of the characters were confined to just a few story lines, rarely spanning more than one season. Maybe that’s why the show always seemed so fresh. Below, we have a breakdown of the character’s tenure and what season ‘retired’ the most… Below is the complete list of every Seinfeld character, soup to nuts. As always, let us know if you find any mistakes, we greatly appreciate your help.