Family
- son Levi Alves McConaughey: Born July 7, 2008; mother, Camilla Alves
- father Jim McConaughey: Played defensive end for Paul 'Bear' Bryant at Alabama and later with the Green Bay Packers until a knee injury ended his football career; sold pipe and couplings in oil business; had divorced wife prior to McConaughey's birth but later reunited and remarried; divorced again briefly when he was 13; remarried until his death from a heart attack Aug. 17. 1992
- mother Kay McConaughey: Born in 1930; divorced husband prior to McConaughey's birth, but the pair later reconciled; divorced again briefly when he was 13; remarried until husband's 1992 death
- brother Michael McConaughey: Born c. 1953; sold pipe and couplings in oil business
- brother Pat McConaughey: Born c. 1962; sold pipe and couplings in oil business
Companions
- Companion Penélope Cruz: Met while filming "Sahara" (2005); began dating in summer 2004; split in June 2006
- Ashley Judd: reportedly involved during filming of "A Time to Kill"
- Michelle Smith: dating as of December 2002
- Patricia Arquette: dated c. 1994
- Salli Richardson: reportedly dating as of late spring 2000
- Sandra Bullock: reportedly dating, although neither will confirm the nature of their relationship; met during filming of "A Time to Kill"
- Companion Camila Alves: Brazilian; began dating in Summer 2007; mother of McConaughey's son
