Kathie Lee Gifford is herself in The Opposite (Season 5 - Episode 22).
Katie Layman is Cynthia, the Mentor in 
Kathryn Kates is Counterwoman in The Dinner Party (Season 5 - Episode 13) and in The Rye (Season 7 - Episode 11).
Kathy Griffin is Sally Weaver in The Doll (Season 7 Episode 17) and in The Cartoon (Season 9 Episode 13).
Kelly Coffield Park is Noreen in The Pledge Drive (Season 6 Episode 3) and in The Chinese Woman (Season 6 Episode 4).
Kimberley Norris or Kimberley Guerrero is Winona, Elaine's poker friend in The Cigar Store Indian (Season 5 Episode 10).
Kristin Davis is Jenna, Jerry's girlfriend and later Bania's. Her first episode was The Pothole (Season 8 Episode 16).
Lanei Chapman is Sidney Fields' housekeeper in 2 episodes. The first: The Old Man (Season 4 Episode 18).
