| First Name | Maggie |
| Middle Name | Ruth |
| Last Name | Gyllenhaal |
| Full Name at Birth | Maggie Ruth Gyllenhaal |
| Other Names | Maggie Ruth Gyllenhaal Sarsgaard |
| Age | 34 |
| Date of Birth | November 16, 1977 |
| Birthplace | New York City, NY |
| Height | 5' 9" (175 cm) |
| Build | Slim |
| Eye Color | Green |
| Hair Color | Brown - Dark |
| Star Sign | Scorpio |
| Ethnicity | White |
| Nationality | American |
| Occupation | Actress |
| Occupation Category | Actress |
| Claim to Fame | Secretary |
| Father | Stephen Gyllenhaal |
| Mother | Noami Gyllenhaal (nee Foner) |
| Brother(s) | Jake Gyllenhaal |
| Friends | Kirsten Dunst |
Margaret Ruth "Maggie" Gyllenhaal (born November 16, 1977) is an American actress. She is the daughter of director Stephen Gyllenhaal and screenwriter Naomi Foner Gyllenhaal (née Achs) and the older sister of actor Jake Gyllenhaal. She made her screen debut when she began to appear in her father's films. Gyllenhaal later achieved recognition in a supporting role in the indie cult hit Donnie Darko (2001). She made her breakthrough role in the 2002 sadomasochistic romance Secretary, for which she received critical acclaim and a Golden Globe nomination.
Selected Maggie Gyllenhaal film and TV show credits: