Trivia

Graduated from Columbia University (1999).

Her father's ancestry is Swedish, English, Swiss-German, German, Scottish, and distant Welsh and French. Her ancestor, cavalry Lieutenant Nils Gunnarsson Haal, was enobled, and changed his surname to Gyllenhaal. Maggie's mother is Ashkenazi Jewish (from a family from Latvia and Poland).

Graduated from Harvard-Westlake School (1995).

She has appeared in one film that has been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically" significant: Batman: El caballero de la noche (2008).

Older sister of Jake Gyllenhaal.

Daughter of Stephen Gyllenhaal and Naomi Foner.

Met her husband Peter Sarsgaard in 2002.

Mother of Ramona Sarsgaard (b. 2006) and Gloria Sarsgaard (b. 2012).