Irene van Dyk is a South African-born New Zealand netball player. A goal-shooter, van Dyk is one of the world's best-known netballers and is the most capped international player of all time.

In sport, a cap is a player's appearance in a game at international level. The term dates from the practice in the United Kingdom of awarding a cap to every player in an international match of rugby football and association football. In the early days of football, the concept of each team wearing a set of matching shirts had not been universally adopted, so each side would distinguish itself from the other by wearing a specific sort of cap.