Family
- father William McMahon: served as Prime Minister of Australia from 1971-1972; died of cancer in 1988 at age 80
- mother Sonia McMahon:
- sister Melinda McMahon: older; born c. 1967
- sister Deborah McMahon: younger; born c. 1973
- daughter Madison Elizabeth McMahon: born on June 9, 2000; mother is Brooke Burns
Companions
- wife Brooke Burns: born c. 1978; appeared on "Baywatch"; married on December 22, 1999; separated in late 2000
- wife Dannii Minogue: Australian; married in 1992; divorced in 1993; sister of singer-actor Kylie Minogue
- Shannen Doherty: co-starred together on "Charmed"; went public with relationship in summer 2001; no longer together
