My Stepmother Is an Alien: Awards and nominations
| Year | Category | Subcategory | Info |
|---|---|---|---|
| 1990 | Academy of Science Fiction, Fantasy & Horror Films, USA | Nominee Saturn Award | Best Science Fiction Film |
| 1990 | Academy of Science Fiction, Fantasy & Horror Films, USA | Nominee Saturn Award | Best Actress (Kim Basinger) |
| 1989 | Young Artist Awards | Nominee Young Artist Award | Best Young Actress in a Motion Picture Comedy or Fantasy (Alyson Hannigan) |
| 1989 | Young Artist Awards | Nominee Young Artist Award | Best Family Animation or Fantasy Motion Picture |