Family
- step-daughter Eleanor Lambert: Born Sept. 5, 1993; daughter of Diane Lane and Christopher Lambert
- father James Brolin: Born in 1940; married to Brolin's mother from 1967-1985; later married and divorced actress Jan Smithers; married singer/actress Barbra Streisand in 1998
- mother Jane Brolin: Born in 1939; met James Brolin when she was working as assistant casting director on the TV series "Batman" (ABC); married from 1967-1985; worked with the Department of Fish and Game, reclaiming animals that had been illegally taken out of the wild; died at age 55 when she drove her car into a tree in February 1995
- step-mother Barbra Streisand: Married James Brolin on July 1, 1998
- brother Jess Brolin: Born Feb. 7, 1972
- half-sister Molly Elizabeth Brolin: Born Nov. 28, 1987; mother, Jan Smithers
- step-brother Jason Emmanuel Gould: Born Dec. 29, 1966; son of Barbra Streisand and Elliot Gould; played Streisand's son in "The Prince of Tides" (1991)
- son Trevor Mansur Brolin: Born June 26, 1988; mother, Alice Adair
- daughter Eden Brolin: Born c. 1994; mother, Alice Adair
Companions
- Diane Lane: dating as of January 2002
- Minnie Driver: acted together in "Slow Burn" (filmed in 1998); announced engagement in April 2001; announced separation in October 2001
