| Rnd | Date | Home | | | Away |
| | | FRIDAY 30 April | | | |
| 3 | 2021-04-30 | Wakehurst FC B U21/1 | 1 | 2 | Harbord FC U21/1B |
| 3 | 2021-04-30 | Harbord FC A U21/1 | 1 | 1 | Wakehurst FC U21/1 A |
| | | SATURDAY 1 May | | | |
| 3 | 2021-05-01 | Dee Why FC U8 Swans | 1 | 7 | Harbord FC U8 Rockets |
| 3 | 2021-05-01 | Harbord FC U8 Dynamites | 0 | 3 | Pittwater RSL FC U8 Apollos |
| 3 | 2021-05-01 | Wakehurst FC U8 Hawks | 3 | 4 | Harbord FC U8 Comets |
| 3 | 2021-05-01 | Harbord FC U8 Jets | 10 | 1 | CC Strikers FC U8 Cobras |
| 3 | 2021-05-01 | Harbord FC U9 Leopards | 2 | 3 | Curl Curl FC U9 Ninjas |
| 3 | 2021-05-01 | Harbord FC U9 Tigers | 1 | 4 | Avalon SC U9 Ravens |
| 3 | 2021-05-01 | Harbord FC U9 Foxes | 1 | 0 | BTH Raiders FC U9 Bandits |
| 3 | 2021-05-01 | Seaforth FC U9 Titans | 5 | 0 | Harbord FC U9 Sharks |
| 3 | 2021-05-01 | Harbord FC U9 Pumas | 4 | 6 | Dee Why FC U9 Gunners |
| 3 | 2021-05-01 | Harbord FC U10 Giants | 0 | 7 | Avalon SC U10 Pumas |
| 3 | 2021-05-01 | Harbord FC U10 Geckos | 2 | 4 | Dee Why FC U10 Hammers |
| 3 | 2021-05-01 | Manly Allambie FC U10 Panthers | 1 | 3 | Harbord FC U10 Redbacks |
| 3 | 2021-05-01 | Manly Allambie FC U11 Ravens | 1 | 3 | Harbord FC U11 Dragons |
| 3 | 2021-05-01 | Harbord FC U11 Demons | 1 | 2 | Curl Curl FC U11 Tiger Snakes |
| 3 | 2021-05-01 | Harbord FC U11 Eagles | 2 | 5 | CC Strikers FC U11 Dingoes |
| 3 | 2021-05-01 | Harbord FC U12/1 | 1 | 6 | Dee Why FC U12/1 |
| 3 | 2021-05-01 | Harbord FC U12/3 | 2 | 3 | Curl Curl FC U12/3 |
| 3 | 2021-05-01 | Harbord FC U12/4 | 2 | 8 | Dee Why FC U12/4 |
| 3 | 2021-05-01 | Avalon SC U13/4 | 0 | 7 | Harbord FC U13/4 |
| 3 | 2021-05-01 | Harbord FC U14/4 | 1 | 1 | Manly Vale FC U14/4 |
| 3 | 2021-05-01 | Saint Augustine’s FC U16/3 | 3 | 0 | Harbord FC U16/3 |
| 7 | 2021-05-01 | Harbord FC PL | 0 | 1 | Mosman FC PL |
| 7 | 2021-05-01 | Harbord FC PLR | 2 | 1 | Mosman FC PLR |
| 4 | 2021-05-01 | Harbord FC AL/1 | 2 | 1 | Wakehurst FC AL1 |
| 4 | 2021-05-01 | Harbord FC AL/1R | 2 | 1 | Wakehurst FC AL1R |
| 4 | 2021-05-01 | Harbord FC AL4 | 1 | 2 | Manly Allambie FC AL4 |
| 4 | 2021-05-01 | Harbord FC AL5A | 3 | 2 | Manly Vale FC AL5A |
| 4 | 2021-05-01 | Mosman FC AL5A | 3 | 1 | Harbord FC AL5B |
| 4 | 2021-05-01 | Curl Curl FC AL6 B | 3 | 2 | Harbord FC AL6 |
| 4 | 2021-05-01 | Harbord FC AL8 | 7 | 0 | BTH Raiders SC AL8 |
| 4 | 2021-05-01 | Harbord FC O35/2 | 3 | 1 | Forest Killarney FC O35/2A |
| 4 | 2021-05-01 | Harbord FC O35/3 | 4 | 0 | Manly Vale FC O35/3 |
| 4 | 2021-05-01 | Harbord FC O35/4 | 1 | 5 | Dee Why FC O35/4 |
| 4 | 2021-05-01 | Harbord FC O35/5 | 4 | 2 | Forest Killarney FC O35/5A |
| | SUNDAY | | | | |
| 2 | 2021-05-02 | Wakehurst FC WU8 Sapphires | 5 | 1 | Harbord FC WU8 Starfish |
| 2 | 2021-05-02 | Harbord FC WU9 Wolves | 1 | 3 | Mosman FC U8 Wallabies |
| 2 | 2021-05-02 | Harbord FC WU9 Brumbies | 1 | 6 | Seaforth FC WU9 Stars |
| 2 | 2021-05-02 | Harbord FC WU10 Cystals | 0 | 7 | Wakehurst FC WU10 Honey Bees |
| 2 | 2021-05-02 | Harbord FC WU10 Opals | 3 | 2 | Seaforth FC WU10 Meerkats |
| 2 | 2021-05-02 | Harbord FC WU11 Emeralds | 2 | 1 | Pittwater RSL FC WU11 Shooting Stars |
| 2 | 2021-05-02 | Wakehurst FC WU12/2 | 1 | 5 | Harbord FC WU12/2 |
| 2 | 2021-05-02 | Harbord FC WU12/3 | 0 | 1 | CC Strikers FC WU12/3 |
| 2 | 2021-05-02 | Harbord FC WU13/2 | 4 | 0 | Seaforth FC WU13/2 |
| 2 | 2021-05-02 | Mosman FC WU14/2 | 3 | 4 | Harbord FC WU14/2 |
| 3 | 2021-05-02 | Narrabeen FC WAL1 | 4 | 2 | Harbord FC WAL1 |
| 3 | 2021-05-02 | Narrabeen FC WAL4 | 1 | 1 | Harbord FC WAL4 |
| 3 | 2021-05-02 | Harbord FC WO40/1 | 0 | 9 | Curl Curl FC WO40/1 |
| 4 | 2021-05-02 | Harbord FC U21/1B | 3 | 1 | Harbord FC U21/1 A |
