| 5. Round | 23/01/2021 | Western United | - | Perth Glory | 5:4 |  |
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| 11. Round | 10/03/2021 | Sydney FC | - | Western United | 2:0 | ||||
| 12. Round | 14/03/2021 | Western United | - | Brisbane Roar | 1:0 | ||||
| 15. Round | 01/04/2021 | Western United | - | Melbourne City FC | 2:1 | ||||
| 15. Round | 05/04/2021 | Newcastle United Jets | - | Western United | 0:1 | |
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| 16. Round | 11/04/2021 | Wellington Phoenix | - | Western United | 3:2 | ||||
| 17. Round | 17/04/2021 | Western United | - | Central Coast Mariners | 1:0 | |
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| 17. Round | 22/04/2021 | Western United | - | Wellington Phoenix | 1:1 |  |
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| 19. Round | 30/04/2021 | Adelaide United | - | Western United | 0:0 | ||||
| 19. Round | 05/05/2021 | Brisbane Roar | - | Western United | 2:1 | ||||
| 21. Round | 15/05/2021 | Western United | - | Sydney FC | 0:1 | ||||
| 22. Round | 22/05/2021 | Wellington Phoenix | - | Western United | 3:0 | ||||
| 23. Round | 28/05/2021 | Western United | - | Melbourne Victory | 1:6 | ||||
| 23. Round | 31/05/2021 | Western United | - | Macarthur FC | 1:2 | |
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| 24. Round | 05/06/2021 | Central Coast Mariners | - | Western United | 2:0 |
Australia