The USATF U20 Outdoor Championships, formerly known as the USA Junior Outdoor Track & Field Championships, is an annual outdoor track and field competition organized by USA Track & Field (USATF) which serves as the national championship for American athletes aged under 20. The competition is also used for American national team selection for the IAAF World U20 Championships in even-numbered years and the Pan American U20 Athletics Championships in odd-numbered years.