Quick Answer
Amobi Okoye is the youngest player drafted in the modern era. Houston took him 10th overall in 2007 when he was 19.
Who Was the Youngest Player Ever Drafted?
Amobi Okoye, a defensive tackle born in Nigeria, finished high school at 16 and played four seasons at Louisville before the Texans drafted him 10th overall in 2007, at age 19.
NFL eligibility rules require a player to be three years out of high school, so few draftees are younger than 20.