| Saturn Award for Best Supporting Actress | |
|---|---|
 | |
| Awarded for | Best performance of the year by a female in a supporting role in a genre film |
| Country | United States |
| Presented by | Academy of Science Fiction, Fantasy and Horror Films |
| First awarded | 1974/75 |
| Currently held by | Emily Blunt for Oppenheimer (2022/2023) |
| Website | www |
The following is a list of Saturn Award nominees and winners for Best Supporting Actress, which rewards the best female supporting performance in a genre film. Anne Ramsey, Tilda Swinton, and Emily Blunt are the only actresses to win this award multiple times (twice), while only Whoopi Goldberg and Mercedes Ruehl have won both the Saturn Award and the Academy Award for Best Supporting Actress for the same role.