Family
- father Kim Ledger: Divorced Ledger's mother c. 1989; lives with Emma Brown
- mother Sally Bell: Divorced Ledger's father c. 1989; remarried
- sister Catherine Ledger: Older; named for the heroine of "Wuthering Heights"
- half-sister Ashleigh Bell: Born c. 1989; parents are Sally and Roger Bell
- half-sister Olivia Ledger: Born c. 1997
- step-father Roger Bell: Married to Heath's mother
- daughter Matilda Ledger: Born Oct. 28, 2005 in Brooklyn, NY; mother, Michelle Williams
Companions
- Companion Michelle Williams: Met in 2004, while filming "Brokeback Mountain" (2005); mother of his daughter Matilda; separated amicably in August 2007
- Companion Naomi Watts: Met during the filming of "Ned Kelly" (2003); began dating in Summer 2002; split in October 2003; rekindled relationship in November 2003; split May 2004
- Christina Cauchi: reportedly were living together in early 2000; no longer together
- Heather Graham: dated from October 2000 to June 2001
- Lisa Zane: became involved during the filming of "Roar"
- Naomi Watts: dated as of Summer 2002
- Companion Gemma Ward: Reportedly dating at end of 2007
