1990–91 National Soccer League

The 1990–91 National Soccer League season, was the 15th season of the National Soccer League in Australia.

Individual awards

 * Player of the Year: Milan Ivanovic (Adelaide City)
 * U-21 Player of the Year: Paul Okon (Marconi Fairfield)
 * Top Scorer: David Seal (Marconi Fairfield) – 19 goals
 * Coach of the Year: Zoran Matic (Adelaide City)