Round 1
| Date | Winner | Score | Loser | Score | Venue |
|---|---|---|---|---|---|
| 2/04/75 | South Sydney | 37 | Ipswich | 6 | Redfern Oval |
| 2/04/75 | Newtown* | 11 | Wests | 11 | Redfern Oval |
| 9/04/75 | Ryde-Eastwood | 17 | Southern Division | 16 | Newcastle |
| 9/04/75 | Newcastle | 27 | Cronulla | 8 | Newcastle |
| 16/04/75 | Balmain | 24 | Brothers | 16 | Lang Park |
| 16/04/75 | Manly | 44 | North Coast | 2 | Lang Park |
| 23/04/75 | Parramatta | 27 | Monaro | 19 | Wagga Wagga |
| 23/04/75 | Canterbury | 21 | Riverina | 16 | Wagga Wagga |
| 30/04/75 | Toowoomba | 22 | North Sydney | 13 | Leichhardt Oval |
| 30/04/75 | Illawarra | 26 | Northern Division | 9 | Leichhardt Oval |
| 7/05/75 | St George | 35 | Brisbane Norths | 16 | Leichhardt Oval |
| 7/05/75 | Penrith | 37 | Brisbane Souths | 9 | Leichhardt Oval |
Read more about this topic: 1975 Amco Cup