A football is a ball inflated with air that is used to play one of the various sports known as football. In these games, with some exceptions, goals or points are scored only when the ball enters one of two designated goal-scoring areas; football games involve the two teams each trying to move the ball in opposite directions along the field of play.

Sherrin is a brand of football used in Australian rules football and is the official ball of the Australian Football League, designed to its official specifications. It was the first ball designed specifically for the sport.