The IAAF U18 Championships in Athletics (until 2015 known as IAAF World Youth Championships in Athletics)[1] was a global athletics event comprising track and field events for competitors who were 17 or younger (youth = Under-18).
The event was organized by International Association of Athletics Federations (IAAF).
In the 206th IAAF Council Meeting, held after the 2016 Summer Olympics, the council decided to conclude the world championship for under-18 athletes after the 2017 event.
The decision was made with the intention of improving under-18 competitions at continental level instead.
Key: Defunct event ^[1] Independent Athletes were not included in the official medal table.