The 1982 KB Cup was the 9th 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 24 matches in a round-robin format with teams playing a round of games with the 2 lowest performing teams being eliminated before the remaining teams played another round of games with the top 8 teams advanced to a knockout stage, with the matches being held midweek during the premiership season.