| Year | Title | Role | Notes |
| 1968 | The Dean Martin Comedy Hour | Girl on Santa's Lap | Episode: "1968 Christmas Show" |
| 1972 | Gunsmoke | Spratt's Child | Episode: "The Judgement" |
| Emergency! | Jenny | Episode: "Dinner Date" |
| 1973 | Tenafly | Suzie's sister | Episode: "The Cash and Carry Caper" |
| 1974–1983 | Little House on the Prairie | Laura Ingalls | Main role |
| 1977 | Christmas Miracle in Caufield, U.S.A. | Kelly Sullivan | TV movie |
| 1978 | The Love Boat | Rosemary 'Rocky' Simpson | Episode: "Rocky" |
| The Hanna-Barbera Happy Hour | Herself | Episode 1.2 |
| 1979 | The Miracle Worker | Helen Keller | TV movie |
| The Little House Years | Laura Ingalls Wilder |
| 1980 | The Diary of Anne Frank | Anne Frank |
| 1981 | Splendor in the Grass | Wilma Dean 'Deanie' Loomis |
| 1983 | Choices of the Heart | Jean Donovan |
| Little House: Look Back to Yesterday | Laura Ingalls Wilder |
| 1984 | Little House: The Last Farewell |
| Family Secrets | Sara Calloway |
| Little House: Bless All the Dear Children | Laura Ingalls Wilder |
| 1985 | Faerie Tale Theatre | Gerda | Episode: "The Snow Queen" |
| 1986 | Choices | Terry Granger | TV movie |
| Penalty Phase | Leah Furman |
| 1987 | Blood Vows: The Story of a Mafia Wife | Marian |
| 1988 | Killer Instinct | Dr. Lisa DaVito |
| 1989 | Ice House | Kay |
| Chameleons | |
| 1990 | Without Her Consent | Emily Briggs |
| Forbidden Nights | Judith Shapiro |
| Joshua's Heart | Claudia |
| Donor | Dr. Kristine Lipton |
| The Lookalike | Gina / Jennifer |
| 1991 | The Hidden Room | | Episode: "Spirit Cabinet" |
| 1992 | Stand by Your Man | Rochelle Dunphy | Main role |
| With a Vengeance | Jenna King / Valerie Tanner | TV movie |
| 1992–1994 | Batman: The Animated Series | Barbara Gordon / Batgirl | Voice - 6 Episodes: I Am the Night, Heart of Steel, Shadow of the Bat and Batgirl Returns |
| 1993 | Family of Strangers | Julie Lawson | TV movie |
| With Hostile Intent | Miranda Berkley |
| Shattered Trust: The Shari Karney Story | Shari Karney |
| House of Secrets | Marion Ravinel |
| Dying to Remember | Lynn Matthews |
| 1994 | The Babymaker: The Dr. Cecil Jacobson Story | Mary Bennett |
| Against Her Will: The Carrie Buck Story | Melissa Prentice |
| Asbestos in Obstetrics | Fire Captain |
| Cries from the Heart | Karen Barth |
| 1994–1995 | Sweet Justice | Kate Delacroy | Main role |
| 1995 | Zoya | Zoya Ossipov | TV movie |
| 1996 | Babylon 5 | Anna Sheridan | 3 episodes |
| A Holiday for Love | Emma Murphy | TV movie |
| 1997 | Seduction in a Small Town | Sarah Jenks |
| Childhood Sweetheart? | Karen Carlson |
| 1998 | The Outer Limits | Teresa Janovitch | Episode: "Relativity Theory" |
