The IFAF Junior World Championship or IFAF World Junior Championship is a biennial competition for American football which ran from 2009 to 2020 and was the precursor of the quadrennial IFAF U20 World Cup with the first event played in 2024 in Edmonton, Canada.

An age adjustment ratified by IFAF has repositioned the premiere junior competition as the U20 IFAF World Junior Championship in 2024 hosted in Edmonton, Alberta on a four-year cycle.

[2] The tournament replaced the eleven-year running NFL Global Junior Championship and is held every two years.

The first iteration of the competition was known as the IFAF Junior World Cup and served as the world championship of American football for players age 20 and under organized by the International Federation of American Football.

The 2020 championships scheduled for Canton, Ohio were cancelled on 3 March 2020 due to the Coronavirus pandemic.