Brian J. Williams is Glenn in The Butter Shave (Season 9 Episode 1).

Brian Kaiser is Postman in The Betrayal (Season 9 Episode 8).

Brian Leckner is Attendant in The Wallet (Season 4 - Episode 5).

Brian McNamara is James in The Wink (Season 7 Episode 4).

Brian Posehn is Artie in The Burning (Season 9 Episode 16).

Brian Reddy is Dan in The Pledge Drive (Season 6 Episode 3).

Bridget Sienna is Evie in The Red Dote (Season 3 Episode 12).

Bruce Davison is Wyck Thayer, chairman of the Susan Biddle Ross Foundation in 3 episodes. First: The Foundation (Season 8 Episode 1).

Bruce Ed Morrow is Father Jessup in The Implant (Season 4 Episode 19).

Bruce Jarchow is the Doctor in The Pilot (Season 4 Episodes 23 and 24) and Mooney in The Millenium (Season 8 Episode 20).

Bruce Kirschbaum is Guy in Police Lineup in The Beard (Season 6 Episode 16).

Bruce Mahler is rabbi Glickman (AKA rabbi Kirshbaum). He appears in 3 episodes: The Postponement (Season 7 Episode 2), The Serenity Now (Season 9 Episode 3) and The Finale (Season 9 Episode 24).

Bryan Cranston is Tim Whatley, the dentist who converted to judaism just for the jokes. He is in 5 episodes. The first: The Mom & Pop Store (Season 6 Episode 8)

Bryant Gumbel is himself in The Puffy Shirt (Season 5 - Episode 2).

Bunny Summers is Old Woman in The Muffin Tops (Season 8 Episode 21).

C.E. Grimes is a Martin in The Suicide (Season 3 Episode 15).

C.K. Steefel is Kramer's Girlfriend in The Keys (Season 3 Episode 22) and Sylvia in The Cigar Store Indian (Season 5 Episode 10).

Candice Bergen is a herself in The Keys (Season 3 Episode 22).

Carl Banks is Policeman #1 in The Andrea Doria (Season 8 Episode 10).

Carl LaBove is Steve in The Kiss Hello (Season 6 Episode 17).

Carlos Jacott is Ramón in The Pool Guy (Season 7 Episode 8).

Carmi Greene is Guest in The Butter Shave (Season 9 Episode 1).

Carol Ann Susi is Carrie in The Boyfriend (Season 3 - Episodes 17-18).

Carol Kane is Corinne, in The Marine Biologist (Season 5 Episode 14).

Carol Kiernan is Mother in The Merv Griffin Show (Season 9 Episode 6).

Carol Leifer appears in three Seinfeld episodes. The first is The Kiss Hello (Season 6 - Episode 16).

Carol Mansell is Mrs. Sanger in The Bubble Boy (Season 4 - Episode 7).