| 2021-11-13 14:00:19November 13, 2021 |  Castle Celtic / Lourdes Celtic vs Spartak Dynamo | 3 - 0 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-11-05 20:00:46November 5, 2021 |  St Fergals vs Castle Celtic / Lourdes Celtic | 1 - 9 | D South 2021 | 2021 | Ballywaltrim | Recap | - |
| 2021-10-30 14:30:26October 30, 2021 |  Castle Celtic / Lourdes Celtic vs Ballyfermot Utd | 5 - 3 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-10-16 14:30:23October 16, 2021 |  Castle Celtic / Lourdes Celtic vs Pegasus/St James | 2 - 3 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-10-09 13:00:53October 9, 2021 |  Palmerstown vs Castle Celtic / Lourdes Celtic | 0 - 2 | D South 2021 | 2021 | Mill Lane | Recap | - |
| 2021-10-02 14:00:45October 2, 2021 |  Castle Celtic / Lourdes Celtic vs OLV | 3 - 1 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-09-24 19:00:32September 24, 2021 |  Firhouse Carmel vs Castle Celtic / Lourdes Celtic | 1 - 3 | D South 2021 | 2021 | Park Community Ctr. | Recap | - |
| 2021-09-11 15:00:20September 11, 2021 |  Castle Celtic / Lourdes Celtic vs DCT Utd | 3 - 6 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-09-04 15:00:14September 4, 2021 | Spartak Dynamo vs Castle Celtic / Lourdes Celtic | 0 - 3 | D South 2021 | 2021 | Marlay Park | Recap | - |
| 2021-08-27 18:45:00August 27, 2021 | Ballyfermot Utd vs Castle Celtic / Lourdes Celtic | 0 - 3 | D South 2021 | 2021 | Le Fanu Park | Recap | - |
| 2021-08-20 18:30:55August 20, 2021 | Castle Celtic / Lourdes Celtic vs St Fergals | 8 - 2 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-08-13 19:00:44August 13, 2021 | Pegasus/St James vs Castle Celtic / Lourdes Celtic | 1 - 1 | D South 2021 | 2021 | St Benildus College | Recap | - |
| 2021-08-06 19:00:08August 6, 2021 | Castle Celtic / Lourdes Celtic vs Palmerstown | 4 - 0 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-07-23 19:00:35July 23, 2021 | OLV vs Castle Celtic | 2 - 2 | D South 2021 | 2021 | Markievicz Park | Recap | - |
| 2021-07-16 19:00:02July 16, 2021 | Castle Celtic vs Firhouse Carmel | 1 - 2 | D South 2021 | 2021 | Stanaway Park | Recap | - |
| 2021-07-02 18:30:08July 2, 2021 | DCT Utd vs Castle Celtic | 2 - 3 | D South 2021 | 2021 | Killinarden Hill | Recap | - |
