| Year | Title | Role | Notes |
|---|
| 1982 | American Playhouse | Mother | Episode: "Carl Sandburg: Echoes and Silences" |
| 1983 | Kennedy | Jean Kennedy Smith | Unknown episodes |
| 1984 | American Playhouse | Louise Mallard | Episode: "The Joy That Kills" |
| 3-2-1 Contact | Kateh | Episode: "Earth: Building Models" |
| 1986 | The Twilight Zone | Ellen Pendleton | Episode: "The Library" |
| Newhart | Liz Sable | Episode: "Co-Hostess Twinkie" |
| Hill Street Blues | Porsche lady | Episode: "Falling from Grace" |
| 1987 | Remington Steele | Gladys Lynch | Episode: "Steele Hanging in There: Part 1" |
| Crime Story | Mrs. Jankowski | Episode: "The Battle of Las Vegas" |
| 1989 | Great Performances | Mrs. Gibbs | Episode: "Our Town" |
| 1990 | Law & Order | Elizabeth Hendrick | Episode: "Prisoner of Love" |
| 1993 | Alex Haley's Queen | Mrs. Benson | 2 episodes |
| 1997 | Crisis Center | Marilyn | Episode: "The Center" |
| 1998 | Cosby | Elizabeth | Episode: "Judgement Day" |
| 1999 | Law & Order | Rosa Halasy | Episode: "Disciple" |
| Stark Raving Mad | Beverly Rose | Episode: "The Pigeon" |
| 2001–05 | Six Feet Under | Ruth Fisher | Lead role |
| 2002 | Lloyd in Space | Mrs. Throbbing Energy Source | Voice, episode: "The Thrilla at Intrepidvilla" |
| 2004 | Higglytown Heroes | Veterinarian Hero | Voice, episode: "Flappy's Not Happy" |
| 2007–08 | ER | Becky Riley | 2 episodes |
| 2008 | Desperate Housewives | Virginia Hildebrand | 3 episodes |
| 2009–14 | How I Met Your Mother | Loretta Stinson | 9 episodes |
| 2010 | Nip/Tuck | Jane Fields | Episode: "Sheila Carlton" |
| Happy Town | Peggy Haplin | 7 episodes |
| Grey's Anatomy | Eleanor | Episode: "Can't Fight Biology" |
| 2010–13 | Scooby-Doo! Mystery Incorporated | Angie Dinkley | Voice, 15 episodes |
| 2011 | United States of Tara | Sandy Gregson | 2 episodes |
| 2011 | Love Bites | Faye Strathmore | Episode: "How To..." |
| 2011 | The Mentalist | Elspeth | Episode: "The Red Mile" |
| 2011 | American Horror Story: Murder House | Moira O'Hara | 11 episodes |
| 2012–13 | American Horror Story: Asylum | The Angel of Death | 5 episodes |
| 2013 | Royal Pains | Blythe Ballard | 6 episodes |
| 2013–14 | American Horror Story: Coven | Myrtle Snow | 10 episodes |
| 2014 | American Horror Story: Freak Show | Gloria Mott | 8 episodes |
| 2015 | Married | Janice | Episode: "Thanksgiving" |
| 2015–18 | Casual | Dawn | 11 episodes |
| 2015 | Getting On | Dr. Alice Marvel | Episode: "No, I Don't Want a Fucking Smiley Face" |
| 2016 | The Real O'Neals | Grandma Agnes | Episode: "The Real Grandma" |
| American Horror Story: Roanoke | Denise Monroe (portraying Mama Polk) | Episode: "Chapter 5" |
| 2017 | We Bare Bears | Faye | Voice, episode: "Neighbors" |
| The Mist | Nathalie Raven | 10 episodes |
| American Horror Story: Cult | Bebe Babbitt | 2 episodes |
| 2018 | Young Sheldon | Dr. Flora Douglas | Episode: "An Eagle Feather, a String Bean, and an Eskimo" |
| 2018–19 | Arrested Development | Lottie Dottie | 5 episodes |
| 2018–19 | Castle Rock | Martha Lacy | 3 episodes |
| 2018 | American Horror Story: Apocalypse | Myrtle Snow | 6 episodes |
| Moira O'Hara | Episode: "Return to Murder House" |
| 2020–22 | Dead to Me | Eileen Wood | 5 episodes |
| 2020 | Summer Camp Island | Mrs. Clarinet / Lead Elf of Ski Patrol | Voice, 3 episodes |
| 2021 | American Horror Story: Double Feature | Sarah Cunningham / Belle Noir | 6 episodes |
| 2022 | The Boys Presents: Diabolical | Barb (voice) | Episode: "An Animated Short Where Pissed-Off Supes Kill Their Parents" |
