The A-League Young Footballer of the Year is an annual soccer award given to the player aged 23 or under at the start of the season who is adjudged to have been the best of the season in the A-League. It is currently called the NAB Young Footballer of the Year for sponsorship purposes. The award has been presented since the 2005–06 season and the winner is chosen by a panel of experts and media representatives. In 2014, the age for eligibility was lifted from 21 to 23. The first winner of the award was Perth Glory midfielder Nick Ward. The current holder is Jamie Maclaren, who won the award for his performances throughout the 2015–16 campaign for Brisbane Roar.
As of 2015, Mathew Ryan is the only player to have won the award on more than one occasion. Marco Rojas is the only non-Australian winner of the trophy. Although they have their own dedicated award, players aged 23 or under at the start of the season remain eligible to win the Johnny Warren Medal, and in 2013 Rojas won both awards.
Since 2009, one player has been awarded a nomination for the award each month of the season, with the eventual winner then selected from the nominees.
The award has been presented on 12 occasions as of 2017, with 10 different winners.