Justin Henry (born May 25, 1971) is an American actor and businessman, known for playing Billy Kramer in the 1979 film Kramer vs. Kramer, a debut role that earned him a nomination for the Academy Award for Best Supporting Actor, when he was eight years old. To date, he remains the youngest Oscar nominee in any category. The performance later earned him a spot (No. 80) on VH1's list of 100 Greatest Kid Stars. Wikipedia