The 1976 Amco Cup was the 3rd edition of the NSWRFL Midweek Cup, a NSWRFL-organised national Rugby League tournament between the leading clubs and representative teams from the NSWRFL, the BRL, the CRL, the QRL, the NZRL and the Northern Territory.
A total of 35 teams from across Australia and New Zealand played 34 matches in a straight knock-out format, with the matches being held midweek during the premiership season.
The final attracted a ground record of 21,670 to Leichhardt Oval. Balmain's second-rower Dennis Tutty was named man-of-the-match.