The Full Form of IAAF is‍ International Association of Athletics Federations.

World Athletics, is the international governing body for the sport of athletics, covering track and field, cross country running, road running, racewalking, mountain running, and ultra running

The International Association of Athletics Federations (IAAF) will now be known as World Athletics, a statement said.

“We’re now World Athletics,” the sport’s international governing body said in their website.

“Welcome to the new World Athletics website, the place to come for all things about our wonderful sport. We’ll be bringing you new features about athletes and the sport, as well as making it easier to find the things we know you love,” the official website said.

“From information about our events and news about our amazing athletes, to the rules of the sport, historical stats and features to inspire you to be active, it’s all here. Over the coming months, we’ll be adding more content and continuing to improve the organisation of the content.”