1980 Tooth Cup
The 1980 Tooth Cup was the 7th 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 16 teams from across Australia and New Zealand played 23 matches in a round-robin format with teams playing 2 games each with the top 8 teams advanced to a knockout stage, with the matches being held midweek during the premiership season.Venues
Round 1
Round 2
| Club | Played | Won | Lost | Drawn | For | Against | Diff. | Points |
| St George | 2 | 2 | 0 | 0 | 56 | 14 | 42 | 4 |
| Penrith | 2 | 2 | 0 | 0 | 44 | 23 | 21 | 4 |
| Parramatta | 2 | 2 | 0 | 0 | 38 | 18 | 20 | 4 |
| Eastern Suburbs | 2 | 2 | 0 | 0 | 25 | 14 | 11 | 4 |
| Canterbury-Bankstown | 2 | 1 | 1 | 0 | 53 | 22 | 31 | 2 |
| South Sydney | 2 | 1 | 1 | 0 | 54 | 25 | 29 | 2 |
| Balmain | 2 | 1 | 1 | 0 | 50 | 21 | 29 | 2 |
| Western Suburbs | 2 | 1 | 1 | 0 | 51 | 32 | 19 | 2 |
| Newtown | 2 | 1 | 1 | 0 | 32 | 18 | 14 | 2 |
| North Sydney | 2 | 1 | 1 | 0 | 49 | 45 | 4 | 2 |
| Combined Brisbane | 2 | 1 | 1 | 0 | 34 | 34 | -3 | 2 |
| Cronulla-Sutherland | 2 | 1 | 1 | 0 | 33 | 44 | -11 | 2 |
| Manly-Warringah | 2 | 0 | 2 | 0 | 27 | 49 | -22 | 0 |
| NSW Country | 2 | 0 | 2 | 0 | 12 | 53 | -41 | 0 |
| Auckland | 2 | 0 | 2 | 0 | 19 | 87 | -68 | 0 |
| QLD Country | 2 | 0 | 2 | 0 | 10 | 85 | -75 | 0 |
| Date | Winner | Score | Loser | Score | Venue |
| 9/07/80 | Eastern Suburbs | 20 | Penrith | 9 | Leichhardt Oval |
| 16/07/80 | Western Suburbs | 10 | St George | 4 | Leichhardt Oval |
| 23/07/80 | Parramatta | 16 | Canterbury-Bankstown | 7 | Leichhardt Oval |
| 30/07/80 | Balmain | 22 | South Sydney | 14 | Leichhardt Oval |
Semi finals
| Date | Winner | Score | Loser | Score | Venue |
| 6/08/80 | Parramatta | 9 | Western Suburbs | 6 | Leichhardt Oval |
| 13/08/80 | Balmain | 18 | Eastern Suburbs | 8 | Leichhardt Oval |
Final
Player of the Series