Son of director Ivan Reitman and Geneviève Robert. Older brother of Catherine Reitman and Caroline Reitman.
In the opening-title sequence of Thank You for Smoking (2005), which used the graphic motif of traditional cigarette cartons, Jason's credit is accompanied by the text "Est'd 1977." This is his year of birth.
Graduated from Harvard-Westlake School (North Hollywood, CA) in 1995
Graduate of the University of Southern California, where he was an English major.
One of 105 people invited to join AMPAS in 2008.
Frequents Los Angeles Steakhouse STK, as does Jason Sarayba and Channing Tatum.
Directed 4 actors in Oscar nominated performances: Ellen Page, George Clooney, Vera Farmiga, and Anna Kendrick.
Father of daughter Josephine Reitman with ex-wife Michele Lee.
His ancestry is Czech Jewish (father) and French-Canadian (mother).
His favorite films are Election (1999), Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964), Harold and Maude (1971), Ferris Bueller's Day Off (1986), Carnal Knowledge (1971), Shampoo (1975), Taxi Driver (1976) and The Conversation (1974).