The National Soccer League Under 21 Player of the Year was an annual soccer award present to the most outstanding player in Australia's National Soccer League under the age of 21. The award was established in the NSL's first season in 1977 and it ran until its last in 2003–04.

The inaugural winner was John Kosmina of West Adelaide, who finished fourth that season. The last winner of the award was Alex Brosque, who played for fourth-placed Marconi that season. Paul Trimboli, Paul Okon, Mark Viduka and Alex Brosque are the only players to win the award twice.

Winners SeasonManagerNationalityClubRef1977West Adelaide1978Sydney City1979Marconi1980Sydney City1981Adelaide City1982Newcastle KB United1983South Melbourne1984Canberra City1985Brisbane Lions1986Melbourne City1987Sunshine George Cross1988South Melbourne1989 South Melbourne1989–90Marconi1990–91 Marconi1991–92Heidelberg United1992–93Marconi1993–94Melbourne Knights1994–95 Melbourne Knights1995–96West Adelaide1996–97Brisbane Strikers1997–98UTS Sydney Olympic1998–99Sydney United1999–2000Perth Glory2000–01Northern Spirit2001–02Newcastle United2002–03Marconi2003–04 Marconi

Multiple winners AwardsPlayerTeamSeasons2 Paul TrimboliSouth Melbourne1988, 19892 Paul OkonMarconi1989–90, 1990–912 Mark VidukaMelbourne Knights1993–94, 1994–952 Alex BrosqueMarconi2002–03, 2003–04

Awards won by club ClubWinsMarconiSouth MelbourneMelbourne KnightsSydney CityWest AdelaideAdelaide CityBrisbane LionsBrisbane StrikersCanberra CityHeidelberg UnitedMelbourne CityNewcastle KB UnitedNewcastle UnitedNorthern SpiritPerth GlorySunshine George CrossSydney UnitedUTS Sydney Olympic

References