He has an identical twin-brother, actor Jeremy London, and his younger sister, Diedre, was born in 1976.

Shannen Doherty is godmother to his daughter, Cooper.

Brother-in-law of Melissa Cunningham.

He is part Cherokee Indian.

His mother is Debbie London. She divorced his father when he was very young, and Jason and his siblings lived with their mother after the divorce.

He grew up in a family of five children; he, twin-brother Jeremy London, younger sister Dedra London and two step-siblings.

Daughter Cooper London was born to him and wife Charlie Spradling on his 24th birthday [7 November 1996].

His younger sister, Dedra London, died in a car accident in 1992, when she was 16.

Chosen by People (USA) magazine as one of the 50 most beautiful people in the world. [1996]

Twin brother of actor Jeremy London.