| Year | Title | Role | Notes |
| 1948 | The Ford Theatre Hour | Dora the Maid | Episode: "Night Must Fall" |
| 1949 | Hold It Please | Herself – Panelist | Canceled after 3 episodes |
| 1950 | The Nash Airflyte Theater | Tuppence Blunt | Episode: "The Case of the Missing Lady" |
| 1950–1952 | Charlie Wild, Private Detective | Effie Perrine | 57 episodes |
| 1950–1954 | The Philco Television Playhouse | Various | 4 episodes |
| 1951 | Somerset Maugham TV Theatre | Mildred Rodgers | Episode: "Of Human Bondage" |
| Studio One | Mrs. Adams | Episode: "Screwball" |
| 1951–1952 | Suspense | Various | 6 episodes |
| 1952 | Bob and Ray | Herself | Series regular |
| Hallmark Hall of Fame | Martha Berry | Episode: "Forgotten Children" |
| 1953–1954 | Pond's Theater | Various | 2 episodes |
| 1955 | Screen Directors Playhouse | Irma | Episode: "Life of Vernon Hathaway" |
| Alfred Hitchcock Presents | Susan Stanger | Season 1 Episode 2: "Premonition" |
| 1955, 1958 | Climax! | Anne Colt / Mrs. Sullivan | 2 episodes |
| 1955, 1962 | General Electric Theatre | Miriam Raskin / Leah Beth | 2 episodes |
| 1956 | Lux Video Theatre | Dottie | Episode: "A Marriage Day" |
| Dick Powell's Zane Grey Theatre | Martha Jessop | Episode: "You Only Run Once" |
| 1956, 1961 | Gunsmoke | Boni / Flory Tibbs | 2 episodes |
| 1957 | Telephone Time | Molly Brown | Episode: "The Unsinkable Molly Brown" |
| 1957–1958 | Lassie | Ruth Martin | 28 episodes |
| 1958 | The Frank Sinatra Show | Helen Wasson | Episode: "The Brownstone Incident" |
| Alfred Hitchcock Presents | Mary Templeton | Season 4 Episode 2: "Don't Interrupt" |
| 1959 | Alcoa Presents: One Step Beyond | Rita Wallace | Episode: "The Dark Room" |
| 1960 | The Man in the Moon | Herself – Performer | Variety special |
| Johnny Staccato | Jessica Winthrop | Episode: "Solomon" |
| Rawhide | Mary Ann Belden | Episode: "Incident of the Arana Sacar" |
| Thriller | Beatrice | Episode: "Girl with a Secret" |
| Wanted Dead or Alive | Ann Barchester | Episode: "The Medicine Man" |
| Outlaws | Maddy | 2 episodes |
| Checkmate | Marilyn Parker | Episode: "The Mask of Vengeance" |
| Shirley Temple's Storybook | Martha | Episode: "The Indian Captive" |
| 1960–1961 | The Loretta Young Show | Ruth Harron / Ella | 2 episodes |
| 1961 | Hawaiian Eye | Ginny Whittier | Episode: "Man in a Rage" |
| The Donna Reed Show | Iris | Episode: "Mouse at Play" |
| Frontier Circus | Anna | Episode: "The Hunter and the Hunted" |
| Twilight Zone | Mrs. Fremont | Episode: "It's a Good Life" |
| Cain's Hundred | Katie Cortner | Episode: "The Fixer" |
| The Untouchables | Billie Mailer | Episode: "Jigsaw" |
| 1961–1963 | 77 Sunset Strip | Various | 3 episodes |
| 1962 | Alcoa Premiere | Meg Bent | Episode: "The Doctor" |
| Target: The Corruptors! | Betty | Episode: "The Wrecker" |
| Route 66 | Lydia | Episode: "Love is a Skinny Kid" |
| Laramie | Sarah | Episode: "Trial by Fire" |
| Wagon Train | Nancy Lee Davis | Episode: "The Nancy Lee Davis Story" |
| The New Breed | Elsie Condon | Episode: "Judgement at San Belito" |
| The Untouchables | Julie Liemer | Episode: "Man in the Middle" |
| Kraft Mystery Theatre | Joan Lindsay | Episode: "Night Panic" |
| Going My Way | Karen Murdock | Episode: "Keep an Eye on Santa Claus" |
| The New Loretta Young Show | Sugar Burnside | Episode: "Anything for a Laugh" |
| Stoney Burke | Eunice Stocker | Episode: "Cousin Eunice" |
| Saints and Sinners | Helen Graham | Episode: "A Night of Horns and Bells" |
| Alfred Hitchcock Presents | Caroline Hardy | Season 7 Episode 38: "Where Beauty Lies" |
| 1964 | The Defenders | Angela Simms | Episode: "Conflict of Interests" |
| 1965 | Mr. Novak | Dorothy Hummer | Two-part episode "Faculty Follies" |
| A Man Called Shenandoah | Laurie Sherman | Episode: "The Caller" |
| The Trials of O'Brien | Isobel Ballentine | Episode: "Goodbye and Keep Cool" |
| Dr. Kildare | Rhoda Kirsh | 5 episodes |
| 1966 | Perry Mason | Gloria Shine | Episode: "The Case of the Crafty Kidnapper" |
| 1967 | Run for Your Life | Deborah Wilson | Episode: "The List of Alice McKenna" |
| The Big Valley | Fay | Episode: "Plunder" |
| The Road West | Amadee | Episode: "The Eighty-Seven Dollar Bride" |
| The Guns of Will Sonnett | Vera | Episode: "And A Killing Rode Into Town" |
| 1967, 1969 | The Virginian | Ellen McKinley / Clara | 2 episodes |
| 1968 | Adam-12 | Judy | Episode: "Log 141: The Color TV Bandit" |
| The Name of the Game | Vera Walker | Episode: "Nightmare" |
| Mannix | Barker's Ex-Wife | Episode: "The Need of a Friend" |
| Judd, for the Defense | Louise Lockhart | Episode: "Punishments, Cruel and Unusual" |
| 1969 | Ironside | Molly Strong | Episode: "Goodbye to Yesterday" |
| Lancer | Angel Day / Hester McLaughlin | 2 episodes |
| 1970 | Marcus Welby, M.D. | Jean Cullen | Episode: "A Very Special Sailfish" |
| That Girl | Sandi | Episode: "Don and Sandi and Harry and Snoopy" |
| 1970–1977 | The Mary Tyler Moore Show | Phyllis Lindstrom | 34 episodes |
| 1972 | Night Gallery | Mrs. Fulton | Episode: "You Can't Get Help Like That Anymore" |
| The Sixth Sense | Judith Eaton | Episode: "Witch, Witch, Burning Bright" |
| Young Dr. Kildare | Julie's Mother | Episode: "The Night of the Intern" |
| Of Thee I Sing | Mary Turner | CBS adaptation of Gershwin musical |
| 1974 | Rhoda | Phyllis Lindstrom | Episodes: "Rhoda's Wedding" (Part 1 & 2) |
| 1975–1977 | Phyllis | 48 episodes |
| 1975 | Wonder Woman | Queen Hippolyta | Episode: "The New Original Wonder Woman" |
| 1977 | The Muppet Show | Herself – Guest Star | Episode: "Cloris Leachman" |
| Yabba Dabba Doo! The Happy World of Hanna-Barbera | Herself – Special Guest | Documentary |
| 1979 | Backstairs at the White House | Mrs. Elizabeth Jaffray | Miniseries |
| The Associates | Mary Nicholson | Episode: "Mr. Marshall's Love Affair" |
| 1983 | ABC Afterschool Special | May Lemke | Episode: "The Woman Who Willed a Miracle" |
| 1984–1985 | The Love Boat | Lisa Andersen / Karen Cooper | 3 episodes |
| 1985 | American Playhouse | Bess Dischinger | Episode: "Breakfast with Les and Bess" |
| 1986–1988 | The Facts of Life | Beverly Ann Stickle | 48 episodes |
| 1987 | Schoolhouse Rock! | Presenter | Direct to video; Goldenvision era videos only |
| Our House | Miss Temple | Episode: "A Silent, Fallen Tree" |
| 1989 | The Nutt House | Ms. Frick / Mrs. Nutt | 10 episodes |
| 1990 | Ferris Bueller | Grandma Margaret | Episode: "Scenes from a Grandma" |
| 1991 | Mary Tyler Moore: The 20th Anniversary Show | Herself | Documentary |
| The Simpsons | Mrs. Glick[3] | Voice, episode: "Three Men and a Comic Book" |
| Sunday Dinner | Georgianna Romani | Episode: "Whose House Is It Anyway?" |
| 1991–1992 | Walter & Emily | Emily Collins | 13 episodes |
| 1992–1993 | The Powers That Be | Enid Powers | 2 episodes |
| 1994 | The Nanny | Clara Mueller | Episode: "The Nanny-In-Law" |
| 1995 | Maybe This Time | Beasy McDonough | Episode: "Beasy Body" |
| 1996–1997 | Promised Land | Ethel Mooster | 2 episodes |
| 1997–2003 | Touched by an Angel | Ruth | 4 episodes |
| 1999 | Thanks | Grammy Winthrop | 6 episodes |
| 2000 | The Norm Show | Mrs. Beaumont | Episode: "Norm vs. the Oldest Profession" |
| Twice in a Lifetime | Ruth Harper / Miss Storey | Episode: "Grandma's Shoes" |
| Love & Money | Beverly Lapeer | Episode: "The Step Mummy" |
| 2001 | Diagnosis: Murder | Sudie (Nurse/Home Care Aid) | Episode: "On the Beach" |
| 2001–2006 | Malcolm in the Middle | Grandma Ida | 11 episodes |
| 2001–2002 | The Ellen Show | Dot Richmond | 18 episodes |
| 2002 | The Mary Tyler Moore Reunion | Herself | Documentary |
| 2003 | The Twilight Zone | Mrs. Fremont[4] | Episode: "It's Still a Good Life" |
| Happy Family | Lois | Episode: "Mother and Child Reunion" |
| 2005 | Family Guy | Herself | Voice, episode: "Petarded" |
| Two and a Half Men | Norma | Episode: "Madame and Her Special Friend" |
| Joan of Arcadia | Aunt Olive | Episode: "The Cat" |
| 2007 | The Wedding Bells | Edith Fleischman | Episode: "The Fantasy" |
| 2008 | Comedy Central Roast | Herself | Episode: "Roast of Bob Saget" |
| Dancing with the Stars | Herself – Celebrity contestant | 17 episodes |
| 2009 | The Office | Lily Hanaday[5] | Episode: "Stress Relief" |
| Hawthorne | Ms. Edna Lachman | Episode: "Healing Time" |
| 2009–2014 | Phineas and Ferb | Anne Doofenshmirtz, Eliza Feyersied | Voice, 5 episodes[1] |
| 2010–2014 | Raising Hope | Barbara June "Maw Maw" Thompson | 83 episodes |
| 2010 | Blue Mountain State | Professor's Mom | Episode: "Midterms" |
| Kathy Griffin: My Life on the D-List | Herself | Episode: "Maggie, the Musical" |
| RuPaul's Drag Race | Episode: "Golden Gals"; special guest judge with Debbie Reynolds |
| 2012 | Top Gear | Episode: "Limos" |
| Adventure Time | Old Marceline | Voice, 2 episodes[1] |
| 2013 | Kirstie | Shirley Kluszewski | Episode: "Little Bummer Boy" |
| Hot in Cleveland | Peg | Episode: "Love Is All Around" |
| 2014 | Franklin & Bash | Irina Lottye Kruskal | Episode: "Spirits in the Material World" |
| 2014–2015 | Girl Meets World | Mrs. Svorski | 2 episodes |
| 2014–2016 | Creative Galaxy | Gallaria | 11 episodes |
| 2015 | The Millers | Louise | Episode: "Louise Louise"[6][7][8][9][10] |
| Hawaii Five-0 | Ruth Tennenbaum | Episode: "Kuka'awale (Stakeout)" |
| 2016 | The Eleventh | Margaret | 5 episodes |
| Bob's Burgers | Meryl | Voice, episode: "Secret Admiral-irer"[1] |
| Royal Pains | Annette Bellamy | Episode: "The Good News Is..." |
| Clarence | Cloris | Voice, episode: "Cloris" |
| 2017–2018 | Justice League Action | Granny Goodness | Voice, 4 episodes[1][11] |
| 2017–2019 | American Gods | Zorya Vechernyaya | 3 episodes |
| 2018–2020 | Elena of Avalor | Hool | Voice, 3 episodes[1] |
| 2019 | Teachers | Anne 'Memaw' Lucas | Episode: "Wedded Miss" |
| Mad About You | Mrs. Alice Mandelbaum | Episode: "Boundaries and Nakedness"[12] |