Jeffrey David Boam (November 30, 1946 - January 24, 2000) was an American screenwriter and film producer. He is known for writing the screenplays for Lethal Weapon 2 and 3, Indiana Jones and the Last Crusade, Innerspace, and The Lost Boys. Boam's films had a cumulative gross of over US$1 billion. He was educated at Sacramento State College and UCLA. Boam died of heart failure on January 24, 2000 at age 53.