| Saturday, 01/04/1989 | Cockburn United - Gosnells City | 2:3 | ||||||
| Saturday, 08/04/1989 | Forrestfield United - Cockburn United | 1:2 | ||||||
| Saturday, 15/04/1989 | Cockburn United - Bassendean Caledonian | 2:3 | ||||||
| Saturday, 22/04/1989 | Morley-Windmills - Cockburn United | 2:4 | ||||||
| Saturday, 29/04/1989 | Cockburn United - Wanneroo British | 5:3 | ||||||
| Saturday, 06/05/1989 | Kelmscott - Cockburn United | 2:2 | ||||||
| Saturday, 13/05/1989 | Cockburn United - Kwinana United | 3:2 | ||||||
| Saturday, 20/05/1989 | Fremantle Benfica - Cockburn United | 2:0 | ||||||
| Saturday, 03/06/1989 | Cockburn United - Osborne Park Galeb | 4:1 | ||||||
| Monday, 05/06/1989 | Cockburn United - Ferndale United | 1:0 | ||||||
| Saturday, 10/06/1989 | Rockingham City - Cockburn United | 1:1 | ||||||
| Saturday, 24/06/1989 | Cockburn United - Inglewood Kiev | 1:6 | ||||||
| Saturday, 01/07/1989 | Balga - Cockburn United | 2:3 | ||||||
| Friday, 07/07/1989 | Gosnells City - Cockburn United | 3:2 | ||||||
| Saturday, 15/07/1989 | Cockburn United - Forrestfield United | 2:2 | ||||||
| Saturday, 29/07/1989 | Cockburn United - Morley-Windmills | 3:3 | ||||||
| Sunday, 30/07/1989 | Bassendean Caledonian - Cockburn United | 3:0 | ||||||
| Saturday, 05/08/1989 | Wanneroo British - Cockburn United | 1:1 | ||||||
| Saturday, 12/08/1989 | Cockburn United - Kelmscott | 1:3 | ||||||
| Saturday, 19/08/1989 | Kwinana United - Cockburn United | 3:1 | ||||||
| Saturday, 26/08/1989 | Cockburn United - Fremantle Benfica | 0:0 | ||||||
| Saturday, 02/09/1989 | Osborne Park Galeb - Cockburn United | 2:0 | ||||||
| Saturday, 09/09/1989 | Ferndale United - Cockburn United | 0:2 | ||||||
| Saturday, 16/09/1989 | Cockburn United - Rockingham City | 3:2 | ||||||
| Saturday, 23/09/1989 | Inglewood Kiev - Cockburn United | 4:2 | ||||||
| Saturday, 30/09/1989 | Cockburn United - Balga | 4:3 |