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Brian Eric Bonsall (born December 3, 1981) is an American rock musician, singer, guitarist and former child actor. Bonsall is the guitarist for punk rock band The Ataris. He is perhaps best known for his roles as Andrew "Andy" Keaton, the youngest child on the NBC sitcom Family Ties from 1986 until 1989, and Alexander Rozhenko, the son of Worf and K'ehleyr, on Star Trek: The Next Generation from 1992 to 1994.
| Year | Title | Role | Notes |
| 1986–1989 | Family Ties | Andrew "Andy" Keaton | 78 episodes |
| 1988 | Mickey's 60th Birthday | Television special | |
| Go Toward the Light | Zack | Television movie | |
| Day by Day | Andrew "Andy" Keaton | Episode: "Trading Places" | |
| 1989 | Do You Know the Muffin Man? | Teddy Dollison | Television movie |
| Booker | Billy | Episode: "Deals and Wheels: Part 1" | |
| On the Television | Googie Chowder | Episode: "Stupid People's Court" | |
| The Super Mario Bros. Super Show! | Brian | Episode: "Koopa Klaus" | |
| 1990 | Mother Goose Rock 'n' Rhyme | Michael | Television movie |
| Angel of Death | Josh | ||
| Married People | Brian | Episode: "To Live and Drive in LA" | |
| 1991 | The Young Riders | Episode: "Old Scores" | |
| Shades of L.A. | Andy Makowski | 2 episodes: | |
| Parker Lewis Can't Lose | Andrew Keaton | Episode: "Civil Wars" | |
| False Arrest | Jason Lukezic | Television movie | |
| 1992–1994 | Star Trek: The Next Generation | Alexander Rozhenko | 7 episodes |
| 1992 | Mikey | Mikey Holt | |
| 1993 | Distant Cousins | Alex Sullivan | |
| Father Hood | Eddie Charles | ||
| 1994 | Blank Check | Preston Waters | |
| Father and Scout | Michael | Television movie | |
| Lily in Winter | Michael Towler | ||
| 2018 | Slaughsages | Bonz | Short film |
| 2022 | You're Melting! | Dr. Love |
| Year | Award | Category | Title of work | Result |
| 1988 | Young Artist Award | Best Young Actor Under Ten Years of Age in Television or Motion Pictures | Family Ties | Won |
| 1989 | Best Young Actor Under Nine Years of Age | |||
| 1990 | Best Young Actor Starring in a TV Movie, Pilot or Special | Do You Know the Muffin Man? | Nominated | |
| Outstanding Performance by an Actor Under Nine Years of Age | Family Ties | Won |