Peggy Lane O'Rourke appears in eleven Seinfeld episodes. The first: The Suicide (Season 3 - Episode 15).

Peggy Mannix is Vincent's mother in The Comeback (Season 8 - Episode 13).

Peggy Stewart is Aun May in The Implant (Season 4 Episode 19).

Perry Anzilotti is the Usher in The Movie (Season 4 - Episode 14).

Peter Allas is Mario in The Calzone (Season 7 Episode 19).

Peter Crombie is Crazy Joe Davola, in five Seinfeld episodes. The first: The Pitch (Season 4 - Episode 3).

Peter Dennis is Lew in The Summer of George (Season 8 Episode 22).

Peter Keleghan is the first Lloyd Braun in The Non-Fat Yogurt (Season 5 - Episode 7).

Peter Krause is Tim in The Limo (Season 3 Episode 19).

Peter Murnik is Lieutenant Martel in The Trip (Season 4 Episode 1).

Peter Riegert is James Kimbrough in The Finale (Season 9 Episodes 23-24).

Phil Morris is Jackie Chiles in five episodes. The first is The Maestro (Season 7 - Episode 3).

Phillip Baker Hall is Joe Bookman in The Library (Season 3 Episode 5).

Philip Bruns is Morty Seinfeld in The Stakeout (Season 1 Episode 2).

Pierrino Mascarino is Father Hernández in The Face Painter (Season 6 - Episode 22).

Ping Wu is Ping in four episodes. The first The Tape (Season 3 - Episode 8).

Rachel Davies is Saleswoman in The Red Dote (Season 3 Episode 12).

Rachel Sweet is Shelly in The Contest (Season 4 Episode 11).

Rae Allen is Mrs. Lenore Sokol in The Boyfriend (Season 3 Episode 17).

Raf Mauro is the car washer in The Smelly Car (Season 4 Episode 21).

Ralph Bruneau is Roy, the dentist in The Note (Season 3 Episode 1).

Ralph Louis Harris is Ralph in The Sniffing Accountant (Season 5 Episode 3).

Ralph Manza is Gepetto in The Cigar Store Indian (Season 5 Episode 10).

Ramón Franco is Mailman in The Package (Season 8 Episode 5).

Rance Howard appears in 2 episodes: 1) The Glasses (Season 5 Episode 3) and 2) The Bottle Deposit (Season 7 Episodes 21-22).

Randy Brenner is Waiter in The Conversion (Season 5 Episode 11).

Randy Carter is Rick in The Abstinence (Season 8 Episode 9).