| 2020-09-01 20:00:4201/09/20 | Thornaby v Bridlington Town | 2 - 0 | | 2020-21 | Teesdale Park | FA CupExtra Preliminary Round Qualifying | 260 |
| 2020-09-05 15:00:0005/09/20 | Thornaby v Billingham Town | 1 - 0 | Division 1 | 2020-21 | Teesdale Park | | 300 |
| Kallum Hannah (75) |
| 2020-09-09 19:45:0009/09/20 | Thornaby v Penrith | 1 - 2 | Division 1 | 2020-21 | Teesdale Park | | 150 |
| Lewis Murphy (4) |
| Kyle May (14) Max Brown (60) |
| 2020-09-12 15:00:0512/09/20 | Thornaby v Sunderland RCA | 0 - 2 | | 2020-21 | Teesdale Park | FA CupPreliminary Round Qualifying | 300 |
| Callum Hope (76) James Farley (79) |
| 2020-09-15 19:30:0015/09/20 | Ashington v Thornaby | 2 - 3 | Division 1 | 2020-21 | The dwmedia Stadium | | 300 |
| Dean Briggs (6) Ben Harmison (35) |
| Luke Drummand (45) Dale Hopson 2 (69, 90), Kallum Hannah missed pen (44) Dale Hopson missed pen (90) |
| 2020-09-26 15:00:0026/09/20 | Thornaby v Newton Aycliffe | 0 - 6 | Division 1 | 2020-21 | Teesdale Park | | 175 |
| Liam Jarvie (2) Jake Petitjean 2 (6, 82) Ethan Wood (13) Adam Burnicle 2 (22 pen, 82) |
| 2020-09-30 19:30:0030/09/20 | Thornaby v Newcastle Benfield | 3 - 3 | Division 1 | 2020-21 | Teesdale Park | | 140 |
| Kallum Hannah (20) James Frazer (51) Bobby Rye (61) |
| Paul Bryson (9 pen) Aidan Haley (40) Abubaker Salim (47) |
| 2020-10-03 15:00:0003/10/20 | Northallerton Town v Thornaby | 0 - 0 | Division 1 | 2020-21 | The Calvert Stadium | | 171 |
| 2020-10-06 19:30:0006/10/20 | Whitley Bay v Thornaby | 1 - 3 | Division 1 | 2020-21 | Hillheads Park | | 150 |
| Adam Shanks (17) |
| Dale Hopson (27 pen) Elliott Beddows 2 (49, 77) |
| 2020-10-10 15:00:5410/10/20 | Newcastle University v Thornaby | 4 - 1 | | 2020-21 | Kimberley Park | FA VaseSecond Qualifying Round | 90 |
| Niza Chilufya 3 (10, 41, 47) Blake Wood (28) |
| Kallum Hannah (75), Reece Kenney sent off |
| 2020-10-14 19:45:0014/10/20 | Guisborough Town v Thornaby | 1 - 2 | Division 1 | 2020-21 | King George V Ground | | 282 |
| Christian Selby (94 pen), Sonni Coleman sent off (51) |
| Peter Bulmer (35) Joseph Carter (71), Callum Hannah sent off (after final whistle) |
| 2020-10-17 15:00:0017/10/20 | Seaham Red Star v Thornaby | 1 - 2 | Division 1 | 2020-21 | The Ferguson Motor Repairs Stadium | | 150 |
| Lewis Suddick (60) |
| Bobby Pye (5) Elliott Bedden (25), Austin Johnston sent off (65) |
| 2020-10-21 19:30:0021/10/20 | Thornaby v Sunderland RCA | 2 - 1 | Division 1 | 2020-21 | Teesdale Park | | 175 |
| Bobby Rye (36), Dale Hopson (43 pen) |
| James Fairley (80) |
| 2020-10-24 15:00:0024/10/20 | Thornaby v Shildon | 2 - 5 | Division 1 | 2020-21 | Teesdale Park | | 251 |
| Dale Hopson (58) Jamie Davis (65) |
| Dean Thexton 2 (4, 48) Aidan Heywood (14) Jamie Poole (46 og) Ben Trotter (87) |
