Family
- brother Ben Watts:
- father Peter Watts: Worked with the band Pink Floyd (his manic laugh kicks off The Dark Side of the Moon); died in 1975, when Naomi was seven
- grandfather Hugh Roberts: Maternal grandfather; lived with on the Isle of Anglesey in North Wales, after her father's death in 1975
- mother Myfanwy Watts: Separated from husband when Naomi was four years old; following Naomi's father's death in 1975, her mother relocated the family to North Wales, where they lived with Naomi's grandparents; moved the family to Sydney in 1982, when Naomi was 14
- grandmother Nikki Roberts: Maternal grandmother; lived with on the Isle of Anglesey in North Wales, after her father's death in 1975
- son Alexander Pete Schreiber: Born July 25, 2007; father, Liev Schreiber
- son Samuel Kai Schreiber: Born Dec. 13, 2008; father, Liev Schreiber
Companions
- Companion Heath Ledger: Met in 2002 on the set of "Ned Kelly" (2004); separated briefly in 2003; announced split in May 2004
- Companion Liev Schreiber: Began dating in May 2005; rumored to be engaged as of April 2006; father of her son Alexander
- Heath Ledger: dated as of Summer 2002
- Stephen Hopkins: born c. 1958; together from 1999 to 2001
