==Personal life==Gyllenhaal has been in a relationship with actor Peter Sarsgaard, a close friend of her brother Jake, since 2002.
Februarja 2011 je Maggie Gyllenhaal zaigrala v še eni igri, ki jo je spisal Anton Chekhov, in sicer kot Masha v igri Austina Pendletona, "Three Sisters", ki so jo uprizarjali v gledališču Classic Stage Company.