Family
- sister Gloria Fallon: Co-wrote the book, I Hate This Place: The Pessimist's Guide to Life with Fallon
- mother Gloria Fallon:
- father Jim Fallon:
Companions
- wife Nancy Juvonen: Co-owner of Flower Films and producing partner with Drew Barrymore; reportedly began dating in 2005, after working together on "Fever Pitch"; became engaged in August 2007 and married Dec. 29, 2007 on Necker Island in the Caribbean
- Winona Ryder: reportedly dating as of spring 2001
