Gina Mastrogiacomo is Prostitute in The Wig Master (Season 7 Episode 18).

Grace Zabriskie is Mrs. Ross, Susan's mother in 5 episodes. The first: The Cheever Letters (Season 4 Episode 8).

Gretchen German is Donna (Cotton Dockers) in The Phone Message (Season 2 - Episode 4).

Gwen McGee is Janine in The Fatigues (Season 8 - Episode 6).

Gwen Shepherd is Cashier in The Stranded (Season 3 Episode 10).

Heather Campbell is Photo Store Sheila in The Package (Season 8 Episodes 5).

Heather Medway is Laura in The Switch (Season 6 Episode 11).

Heidi Swedberg is Susan Biddle Ross in 28 episodes. The first The Pitch (Season 4 - Episode 3).

Helen Slater is Becky Gelke in The Good Samaritan (Season 3 - Episode 20).

Ilana Levine is Joyce, the gym instructor in The Contest (Season 4 Episode 11).

Ileana Douglas is Loretta in The Strong Box (Season 9 Episode 14).

Ileen Getz is AIDS walk organizer in The Sponge (Season 7 Episode 9).

Ivana Milicevic is Patty, Milos' wife in The Comeback (Season 8 Episode 13).

Jami Gertz is Jane or Erica in The Stall (Season 5 Episode 12).

Jana Marie Hupp is Sasha in The Conversion (Season 5 Episode 11).

Jane A. Johnston is Mrs. Gack, Todd's Mother in The Calzone (Season 7 Episode 19).

Jane Edith Wilson is Woman in The Susie (Season 8 - Episode 15)).

Jane Leeves is Marla Penny, the virgin, in four episodes. The first was The Virgin (Season 4 Episode 10).

Janet Zarish is Rental Car Agent in The Alternate Side (Season 3 Episode 11).

Janice Davies is Building B in The Cadillac Part 2 (Season 7 - Episode 14).

Jann Karam is Sandy in The Switch (Season 6 Episode 11).

Janeane Garofalo is Jeannie Steinman in The Invitations (Season 7 Episode 24) and in The Foundation (Season 8 Episode 1).

Jeanine Jackson is Roxanne in The Apartment (Season 2 Episode 5).

Jeannie Elias is Myra in The Bris (Season 5 Episode 5).

Jennifer Campbell is Tia Van Kamp in three episodes. The first The Airport (Season 4 - Episode 12).

Jennifer Coolidge is Jody, Jerry's girlfriend in The Masseuse (Season 5 Episode 9).

Jennifer Guthrie is Lena Small in The Sponge (Season 7 Episode 9).