| NSWRFL KB Cup | |
|---|---|
| Tournament details | |
| Dates | 13 April - 10 August 1983 |
| Teams | 18 |
| Venue(s) | 3 (in 3 host cities) |
| Final positions | |
| Champions | Manly-Warringah (2nd title) |
| Runners-up | Cronulla-Sutherland |
| Tournament statistics | |
| Matches played | 17 |
← 1982 1984 → | |
The 1983 KB Cup was the 10th edition of the NSWRFL Midweek Cup, a NSWRFL-organised national club Rugby League tournament between the leading clubs and representative teams from the NSWRFL, the BRL, the CRL, the QRL and the NZRL.
A total of 18 teams from across Australia and New Zealand played 17 matches in a straight knock-out format, with the matches being held midweek during the premiership season.