Filmography65 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2022 | Trixie MotelSeries | Self (archive footage) | 66 |
| 2019 | Tamron HallSeries | Self - Guest | 63 |
| 2019 | Rock, Paper, ScissorsMovie | Nurse Ruland | 63 |
| 2017 | The NeighborhoodMovie | Rachelle | 61 |
| 2016 | The Loud HouseSeries | Jancey (voice) | 60 |
| 2015 | I'm a Celebrity: Get Me Out of Here!Series | Self | 59 |
| 2015 | Lift Me UpMovie | — | 59 |
| 2015 | Christmas LandMovie | Glinda Bonaparte | 59 |
| 2014 | Naughty & NiceMovie | Kate | 58 |
| 2009 | Watch What Happens Live with Andy CohenSeries | Self - Guest | 53 |
| 2008 | Gone CountrySeries | Self | 52 |
| 2006 | Rachael RaySeries | — | 50 |
| 2005 | Dancing with the StarsSeries | Self - Contestant | 49 |
| 2005 | Celebrity Fit ClubSeries | Self - Contestant | 49 |
| 2004 | The Brady Bunch 35th Anniversary Reunion Special: Still Brady After All These YearsMovie | Self | 48 |
| 2003 | Dickie Roberts: Former Child StarMovie | Self | 47 |
| 2003 | ABC's 50th Anniversary CelebrationMovie | Self | 47 |
| 2003 | Comedy Central RoastsSeries | Self | 47 |
| 2001 | ScrubsSeries | Maureen McCormick | 45 |
| 2001 | The GuardianSeries | Receptionist | 45 |
| 2000 | The Brothers GarcíaSeries | Mrs. Bauer | 44 |
| 2000 | Son of the BeachSeries | — | 44 |
| 2000 | The Million Dollar KidMovie | Betsy Hunter | 44 |
| 1997 | Teen AngelSeries | Judy Beauchamp | 41 |
| 1997 | Get to the Heart: The Barbara Mandrell StoryMovie | Barbara Mandrell | 41 |
| 1996 | E! True Hollywood StorySeries | — | 40 |
| 1996 | MoeshaSeries | Saleslady | 40 |
| 1996 | The Rosie O'Donnell ShowSeries | Self | 40 |
| 1996 | A Very Brady SequelMovie | Kitty (voice) (uncredited) | 40 |
| 1996 | Panic in the Skies!Movie | Flight Attendant | 40 |
| 1995 | The Single GuySeries | Valerie | 39 |
| 1995 | Brady Bunch Home MoviesMovie | self | 39 |
| 1994 | Touched by an AngelSeries | Jodi | 38 |
| 1993 | Intimate PortraitSeries | Self | 37 |
| 1991 | Herman's HeadSeries | Herself | 35 |
| 1988 | A Very Brady ChristmasMovie | Marcia Brady Logan | 32 |
| 1988 | Day by DaySeries | Marcia Brady | 32 |
| 1987 | Return to Horror HighMovie | Officer Tyler | 31 |
| 1983 | Shout for JoyMovie | Alma Irons | 27 |
| 1981 | The Brady Girls Get MarriedMovie | Marsha Brady | 25 |
| 1981 | Texas LightningMovie | Fay | 25 |
| 1980 | The IdolmakerMovie | Ellen Fields | 24 |
| 1979 | Skatetown, U.S.A.Movie | Susan | 23 |
| 1978 | Fantasy IslandSeries | Angela Brennan | 22 |
| 1978 | The RunawaysSeries | — | 22 |
| 1977 | The Love BoatSeries | Suzy Corbett | 21 |
| 1977 | The Hardy Boys / Nancy Drew MysteriesSeries | — | 21 |
| 1977 | The Brady Bunch HourSeries | Marcia Brady | 21 |
| 1976 | Donny & MarieSeries | Self | 20 |
| 1976 | Pony Express RiderMovie | Rose | 20 |
| 1975 | The Turning Point of Jim MalloyMovie | — | 19 |
| 1975 | Joe ForresterSeries | — | 19 |
| 1974 | Harry OSeries | — | 18 |
| 1974 | Happy DaysSeries | — | 18 |
| 1973 | The World of Sid & Marty Krofft at the Hollywood BowlMovie | Herself | 17 |
| 1972 | The Streets of San FranciscoSeries | — | 16 |
| 1972 | The Brady KidsSeries | Marcia Brady (voice) | 16 |
| 1971 | Cold TurkeyMovie | Talking Doll (voice) (uncredited) | 15 |
| 1969 | The Brady BunchSeries | Marcia Brady | 13 |
| 1965 | I Dream of JeannieSeries | Susan | 9 |
| 1965 | Honey WestSeries | Margaret Mary Driscoll | 9 |
| 1965 | Camp RunamuckSeries | — | 9 |
| 1964 | BewitchedSeries | Little Endora | 8 |
| 1961 | The Mike Douglas ShowSeries | Self | 5 |
| 1960 | My Three SonsSeries | — | 4 |