Lawrence Taylor is Himself in The Masseuse (Season 5 Episode 9).
Lee Arenberg is Mike Moffit in The Parking Space (Season 3 - Episode 21) and in The Susie (Season 8 - Episode 15).
Lee Garlington is Claire in The Seinfeld Chronicles (Season 1 Episode 1).
Len Lesser is the Uncle Leo in 14 episodes. The first: The Pony Remark (Season 2 Episode 2).
Lisa Edelstein is Karen, in two episodes: The Mango (Season 5 Episode 1) and The Masseuse (Season 5 Episode 9).
Lisa Mende is Carol in four episodes. The first The Boyfriend 2 (Season 3 Episode 17).
Lisa Pescia is Joanne in three Seinfeld episodes. The first is The Cigar Store Indian (Season 5 Episode 10).
Liz Sheridan is Helen Seinfeld, Jerry's mother. She appears in 21 episodes. The first: The Stakeout (Season 1 Episode 2).
Lloyd Bridges is Izzy Mandelbaun in The English Patient (Season 8 Episode 17) an in The Blood (Season 9 Episode 4).
