- Is the son of Stephen Friedman, who was an executive with Goldman Sachs, an advisor to President George W. Bush and a chairman of the Federal Reserve Bank of New York.
- Was on the wrestling team in high school.
- Wrote a master's thesis on Samuel Beckett.
- Met fellow student D.B. Weiss while attending Trinity College, Dublin. The two became friends and eventually adapted George R. R. Martin's A Song of Ice and Fire series of novels into the TV series Game of Thrones, which debuted on HBO in 2011.
- Worked as a high-school teacher, DJ and club bouncer.
- Wrote a novel as his creative writing thesis in 1999. Titled The 25th Hour, it was published in 2001; he also wrote the screenplay for its 2002 film adaptation.
- Was married in 2006 in New York City at Friends Seminary, a Quaker school his wife, Amanda Peet, attended.
- 2013, Emmy — Outstanding Writing for a Drama Series: Nominee
- 2014, Emmy — Outstanding Writing for a Drama Series: Nominee
- 2015, Producers Guild Awards — Norman Felton Award for Outstanding Producer of Episodic Television, Drama: Nominee
- 2011, Emmy — Outstanding Drama Series: Nominee
- 2011, Emmy — Outstanding Writing for a Drama Series: Nominee
- 2007, BAFTA Film Awards — Best Adapted Screenplay: Nominee
- 2014, Emmy — Outstanding Drama Series: Nominee
- 2015, Writers Guild Awards — Drama Series: Nominee
- 2012, Emmy — Outstanding Drama Series: Nominee
- 2013, Emmy — Outstanding Drama Series: Nominee
- Frances Pen Benioff — Daughter
- Molly June Benioff — Daughter
- Barbara Benioff Friedman — Mother
- Stephen Friedman — Father
- Amanda Peet — Wife
- Henry Peet Friedman Benioff — Son
- Dartmouth College, Hanover, New Hampshire, United States (BA in English, 1992); Trinity College, Dublin, Dublin, Ireland (M. Phil. in Irish Writing); University of California, Irvine, Irvine, California, United States (MFA in Creative Writing, 1999)
Season 5, Episode 4
- Birth Name: David Friedman
- Birth Place: New York, New York, United States
- Birthday: May 6, 1970,
- Profession: Screenwriter, Author, Executive producer
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