Siân Heder (/ˈʃɑːn ˈheɪdər/; born June 23, 1977) is an American filmmaker who is best known for writing and directing the films Tallulah and CODA.

[3] After graduation, Heder moved to Los Angeles to become an actress and screenwriter while working for a nanny agency.

[4] At the agency, she worked for guests with children staying at four-star hotels and her experiences inspired Mother, her first short film as writer and director.

[5] In early 2005, the script for Mother was one of eight chosen to be awarded a fellowship for the prestigious American Film Institute's DWW (Directing Workshop for Women).

In 2010, Heder won a Peabody Award, along with her fellow writers, for her work on the acclaimed U.S. television series, Men of a Certain Age.