| 1990 New South Wales Rugby League premiership | |
|---|---|
| Teams | 16 |
| Premiers |  Canberra (2nd title) |
| Minor premiers | Canberra (1st title) |
| Matches played | 183 |
| Points scored | 6107 |
| Average attendance | 12,139 |
| Attendance | 2,209,354 |
| Top points scorer(s) | Mal Meninga (212) |
| Rothmans Medal |  Peter Sterling |
| Top try-scorer(s) | Mal Meninga (17) |
The 1990 New South Wales Rugby League season was the eighty-third season of professional rugby league football in Australia. Sixteen clubs competed for the J J Giltinan Shield and Winfield Cup during the premiership season, which culminated in a grand final between the previous season's premiers, the Canberra Raiders and the Penrith Panthers, who were making their grand final debut.