| 19 Mar 21 | r01   | DroghedaDrogheda | 1 - 0 | Waterford FCWaterford FC |
| 19 Mar 21 | r01 | ShamrockShamrock | 1 - 1 | St PatricksSt Patricks |
| 20 Mar 21 | r01 | Finn Harps FCFinn Harps FC | 1 - 0 | BohemiansBohemians |
| 20 Mar 21 | r01 | Longford TownLongford Town | 2 - 0 | Derry CityDerry City |
| 20 Mar 21 | r01 | SligoSligo | 1 - 1 | DundalkDundalk |
| |
| 26 Mar 21 | r02  | DundalkDundalk | 1 - 2 | Finn Harps FCFinn Harps FC |
| 26 Mar 21 | r02 | Waterford FCWaterford FC | 1 - 2 | SligoSligo |
| 27 Mar 21 | r02 | BohemiansBohemians | 2 - 2 | Longford TownLongford Town |
| 27 Mar 21 | r02 | St PatricksSt Patricks | 2 - 1 | DroghedaDrogheda |
| |
| 02 Apr 21 | r03 | Longford TownLongford Town | 0 - 1 | SligoSligo |
| 02 Apr 21 | r03 | ShamrockShamrock | 2 - 1 | DundalkDundalk |
| 03 Apr 21 | r03 | Derry CityDerry City | 1 - 2 | Waterford FCWaterford FC |
| 03 Apr 21 | r03 | DroghedaDrogheda | 1 - 1 | Finn Harps FCFinn Harps FC |
| 03 Apr 21 | r03 | BohemiansBohemians | 0 - 1 | St PatricksSt Patricks |
| |
| 09 Apr 21 | r04 | St PatricksSt Patricks | 2 - 0 | Derry CityDerry City |
| 09 Apr 21 | r04 | DundalkDundalk | 0 - 1 | BohemiansBohemians |
| 10 Apr 21 | r04 | Finn Harps FCFinn Harps FC | 2 - 1 | Waterford FCWaterford FC |
| 10 Apr 21 | r04 | Longford TownLongford Town | 0 - 4 | DroghedaDrogheda |
| 10 Apr 21 | r04 | SligoSligo | 1 - 1 | ShamrockShamrock |
| |
| 13 Apr 21 | r02 | Derry CityDerry City | 0 - 2 | ShamrockShamrock |
| |
| 16 Apr 21 | r05 | Waterford FCWaterford FC | 0 - 1 | BohemiansBohemians |
| 16 Apr 21 | r05 | Derry CityDerry City | 1 - 1 | DroghedaDrogheda |
| 17 Apr 21 | r05 | DundalkDundalk | 1 - 1 | St PatricksSt Patricks |
| 17 Apr 21 | r05 | ShamrockShamrock | 2 - 1 | Longford TownLongford Town |
| 17 Apr 21 | r05 | SligoSligo | 1 - 0 | Finn Harps FCFinn Harps FC |
| |
| 20 Apr 21 | r06 | Derry CityDerry City | 1 - 1 | DundalkDundalk |
| 20 Apr 21 | r06 | DroghedaDrogheda | 0 - 1 | ShamrockShamrock |
| 20 Apr 21 | r06 | St PatricksSt Patricks | 1 - 0 | Waterford FCWaterford FC |
| 20 Apr 21 | r06 | Longford TownLongford Town | 0 - 0 | Finn Harps FCFinn Harps FC |
| 20 Apr 21 | r06 | BohemiansBohemians | 1 - 3 | SligoSligo |
| |
| 23 Apr 21 | r07 | Finn Harps FCFinn Harps FC | 0 - 2 | St PatricksSt Patricks |
| 23 Apr 21 | r07 | ShamrockShamrock | 2 - 1 | BohemiansBohemians |
| 24 Apr 21 | r07 | DundalkDundalk | 2 - 1 | DroghedaDrogheda |
| 24 Apr 21 | r07 | Waterford FCWaterford FC | 1 - 0 | Longford TownLongford Town |
| 24 Apr 21 | r07 | SligoSligo | 0 - 1 | Derry CityDerry City |
| |
| 30 Apr 21 | r08 | St PatricksSt Patricks | 3 - 0 | Longford TownLongford Town |
| 30 Apr 21 | r08 | DroghedaDrogheda | 1 - 1 | SligoSligo |
| 30 Apr 21 | r08 | BohemiansBohemians | 1 - 2 | Derry CityDerry City |
| 30 Apr 21 | r08 | Waterford FCWaterford FC | 0 - 3 | DundalkDundalk |
| 30 Apr 21 | r08 | Finn Harps FCFinn Harps FC | 0 - 2 | ShamrockShamrock |
| |
| 03 May 21 | r09 | DroghedaDrogheda | 1 - 1 | BohemiansBohemians |
| 03 May 21 | r09 | ShamrockShamrock | 3 - 0 | Waterford FCWaterford FC |
| 03 May 21 | r09 | Longford TownLongford Town | 2 - 2 | DundalkDundalk |
| 03 May 21 | r09 | SligoSligo | 1 - 1 | St PatricksSt Patricks |
| 03 May 21 | r09 | Derry CityDerry City | 1 - 2 | Finn Harps FCFinn Harps FC |
| |
| 07 May 21 | r10 | Derry CityDerry City | 1 - 1 | Longford TownLongford Town |
| 07 May 21 | r10 | DundalkDundalk | 0 - 1 | SligoSligo |
| 08 May 21 | r10 | Waterford FCWaterford FC | 0 - 7 | DroghedaDrogheda |
| 08 May 21 | r10 | BohemiansBohemians | 4 - 0 | Finn Harps FCFinn Harps FC |
| 08 May 21 | r10 | St PatricksSt Patricks | 1 - 2 | ShamrockShamrock |
| |
| 14 May 21 | r11 | Finn Harps FCFinn Harps FC | 1 - 1 | DundalkDundalk |
| 14 May 21 | r11 | DroghedaDrogheda | 3 - 1 | St PatricksSt Patricks |
| 15 May 21 | r11 | ShamrockShamrock | 1 - 1 | Derry CityDerry City |
| 15 May 21 | r11 | Longford TownLongford Town | 0 - 2 | BohemiansBohemians |
| 15 May 21 | r11 | SligoSligo | 3 - 0 | Waterford FCWaterford FC |
| |
| 21 May 21 | r12 | Waterford FCWaterford FC | 0 - 1 | Derry CityDerry City |
| 21 May 21 | r12 | St PatricksSt Patricks | 2 - 1 | BohemiansBohemians |
| 21 May 21 | r12 | DundalkDundalk | 2 - 1 | ShamrockShamrock |
| 21 May 21 | r12 | Finn Harps FCFinn Harps FC | 0 - 1 | DroghedaDrogheda |
| 21 May 21 | r12 | SligoSligo | 2 - 0 | Longford TownLongford Town |
| |
| 24 May 21 | r13 | Derry CityDerry City | 2 - 2 | St PatricksSt Patricks |
| 24 May 21 | r13 | BohemiansBohemians | 5 - 1 | DundalkDundalk |
| 24 May 21 | r13 | Waterford FCWaterford FC | 1 - 2 | Finn Harps FCFinn Harps FC |
| 24 May 21 | r13 | DroghedaDrogheda | 4 - 1 | Longford TownLongford Town |
| 24 May 21 | r13 | ShamrockShamrock | 0 - 1 | SligoSligo |
| |
| 28 May 21 | r14 | Finn Harps FCFinn Harps FC | 1 - 2 | SligoSligo |
| 28 May 21 | r14 | DroghedaDrogheda | 1 - 2 | Derry CityDerry City |
| 28 May 21 | r14 | St PatricksSt Patricks | 0 - 2 | DundalkDundalk |
| 29 May 21 | r14 | BohemiansBohemians | 3 - 0 | Waterford FCWaterford FC |
| 29 May 21 | r14 | Longford TownLongford Town | 0 - 1 | ShamrockShamrock |
| |
| 11 Jun 21 | r15 | Derry CityDerry City | 1 - 1 | BohemiansBohemians |
| 11 Jun 21 | r15 | DundalkDundalk | 1 - 3 | Waterford FCWaterford FC |
| 11 Jun 21 | r15 | ShamrockShamrock | 1 - 1 | Finn Harps FCFinn Harps FC |
| 12 Jun 21 | r15 | Longford TownLongford Town | 1 - 3 | St PatricksSt Patricks |
| 12 Jun 21 | r15 | SligoSligo | 1 - 2 | DroghedaDrogheda |
| |
| 18 Jun 21 | r16 | DundalkDundalk | 1 - 1 | Longford TownLongford Town |
| 18 Jun 21 | r16 | Waterford FCWaterford FC | 1 - 4 | ShamrockShamrock |
| 18 Jun 21 | r16 | St PatricksSt Patricks | 2 - 0 | SligoSligo |
| 18 Jun 21 | r16 | BohemiansBohemians | 5 - 0 | DroghedaDrogheda |
| 18 Jun 21 | r16 | Finn Harps FCFinn Harps FC | 1 - 2 | Derry CityDerry City |
| |
| 21 Jun 21 | r17 | Derry CityDerry City | 1 - 1 | SligoSligo |
| 21 Jun 21 | r17 | DroghedaDrogheda | 0 - 1 | DundalkDundalk |
| 21 Jun 21 | r17 | St PatricksSt Patricks | 4 - 1 | Finn Harps FCFinn Harps FC |
| 21 Jun 21 | r17 | BohemiansBohemians | 1 - 0 | ShamrockShamrock |
| 21 Jun 21 | r17 | Longford TownLongford Town | 1 - 2 | Waterford FCWaterford FC |
| |
| 25 Jun 21 | r18 | Waterford FCWaterford FC | 1 - 1 | St PatricksSt Patricks |
| 25 Jun 21 | r18 | DundalkDundalk | 2 - 1 | Derry CityDerry City |
| 25 Jun 21 | r18 | Finn Harps FCFinn Harps FC | 1 - 1 | Longford TownLongford Town |
| 25 Jun 21 | r18 | ShamrockShamrock | 1 - 1 | DroghedaDrogheda |
| 26 Jun 21 | r18 | SligoSligo | 4 - 0 | BohemiansBohemians |
| |
| 02 Jul 21 | r19 | Derry CityDerry City | 2 - 0 | Waterford FCWaterford FC |
| 02 Jul 21 | r19 | DroghedaDrogheda | 3 - 1 | Finn Harps FCFinn Harps FC |
| 02 Jul 21 | r19 | BohemiansBohemians | 3 - 2 | St PatricksSt Patricks |
| 02 Jul 21 | r19 | ShamrockShamrock | 3 - 1 | DundalkDundalk |
| 03 Jul 21 | r19 | Longford TownLongford Town | 0 - 1 | SligoSligo |
| |
| 09 Jul 21 | r20 | Finn Harps FCFinn Harps FC | 0 - 1 | Waterford FCWaterford FC |
| 09 Jul 21 | r20 | St PatricksSt Patricks | 1 - 0 | Derry CityDerry City |
| 10 Jul 21 | r20 | Longford TownLongford Town | 1 - 1 | DroghedaDrogheda |
| |
| 16 Jul 21 | r21 | Derry CityDerry City | 2 - 4 | ShamrockShamrock |
| 16 Jul 21 | r21 | St PatricksSt Patricks | 2 - 0 | DroghedaDrogheda |
| 17 Jul 21 | r21 | DundalkDundalk | 1 - 0 | Finn Harps FCFinn Harps FC |
| 18 Jul 21 | r21 | BohemiansBohemians | 1 - 1 | Longford TownLongford Town |
| 18 Jul 21 | r21 | Waterford FCWaterford FC | 1 - 0 | SligoSligo |
| |
| 30 Jul 21 | r22 | DroghedaDrogheda | 1 - 2 | Waterford FCWaterford FC |
| 30 Jul 21 | r22 | ShamrockShamrock | 3 - 1 | St PatricksSt Patricks |
| 31 Jul 21 | r22 | Longford TownLongford Town | 0 - 2 | Derry CityDerry City |
| |
| 06 Aug 21 | r23 | Derry CityDerry City | 3 - 0 | DroghedaDrogheda |
| 07 Aug 21 | r23 | Waterford FCWaterford FC | 1 - 0 | BohemiansBohemians |
| 07 Aug 21 | r23 | SligoSligo | 0 - 1 | Finn Harps FCFinn Harps FC |
| 08 Aug 21 | r23 | DundalkDundalk | 1 - 4 | St PatricksSt Patricks |
| 08 Aug 21 | r23 | ShamrockShamrock | 1 - 0 | Longford TownLongford Town |
| |
| 13 Aug 21 | r24 | St PatricksSt Patricks | 2 - 1 | Waterford FCWaterford FC |
| 14 Aug 21 | r24 | Longford TownLongford Town | 0 - 3 | Finn Harps FCFinn Harps FC |
| 15 Aug 21 | r24 | Derry CityDerry City | 1 - 0 | DundalkDundalk |
| 15 Aug 21 | r24 | DroghedaDrogheda | 0 - 1 | ShamrockShamrock |
| 15 Aug 21 | r24 | BohemiansBohemians | 1 - 0 | SligoSligo |
| |
| 20 Aug 21 | r25 | DundalkDundalk | 1 - 2 | DroghedaDrogheda |
| 20 Aug 21 | r25 | Waterford FCWaterford FC | 4 - 1 | Longford TownLongford Town |
| 20 Aug 21 | r25 | Finn Harps FCFinn Harps FC | 3 - 1 | St PatricksSt Patricks |
| 21 Aug 21 | r25 | SligoSligo | 1 - 2 | Derry CityDerry City |
| |
| 03 Sep 21 | r26 | Waterford FCWaterford FC | 1 - 1 | DundalkDundalk |
| 03 Sep 21 | r26 | St PatricksSt Patricks | 3 - 2 | Longford TownLongford Town |
| 03 Sep 21 | r26 | DroghedaDrogheda | 0 - 0 | SligoSligo |
| 03 Sep 21 | r26 | Finn Harps FCFinn Harps FC | 2 - 1 | ShamrockShamrock |
| |
| 10 Sep 21 | r27 | Derry CityDerry City | 2 - 2 | Finn Harps FCFinn Harps FC |
| 10 Sep 21 | r27 | DroghedaDrogheda | 3 - 2 | BohemiansBohemians |
| 10 Sep 21 | r27 | SligoSligo | 2 - 0 | St PatricksSt Patricks |
| 10 Sep 21 | r27 | ShamrockShamrock | 2 - 0 | Waterford FCWaterford FC |
| 11 Sep 21 | r27 | Longford TownLongford Town | 1 - 0 | DundalkDundalk |
| |
| 13 Sep 21 | r22 | Finn Harps FCFinn Harps FC | 1 - 2 | BohemiansBohemians |
| 14 Sep 21 | r22 | SligoSligo | 2 - 1 | DundalkDundalk |
| |
| 18 Sep 21 | r20 | SligoSligo | 0 - 1 | ShamrockShamrock |
| |
| 20 Sep 21 | r26 | BohemiansBohemians | 3 - 3 | Derry CityDerry City |
| |
| 24 Sep 21 | r28 | Derry CityDerry City | 3 - 0 | Longford TownLongford Town |
| 24 Sep 21 | r28 | Waterford FCWaterford FC | 1 - 0 | DroghedaDrogheda |
| 24 Sep 21 | r28 | DundalkDundalk | 4 - 1 | SligoSligo |
| 24 Sep 21 | r28 | BohemiansBohemians | 1 - 2 | Finn Harps FCFinn Harps FC |
| 24 Sep 21 | r28 | St PatricksSt Patricks | 0 - 1 | ShamrockShamrock |
| |
| 27 Sep 21 | r20 | DundalkDundalk | 2 - 1 | BohemiansBohemians |
| |
| 01 Oct 21 | r29 | DroghedaDrogheda | 0 - 1 | St PatricksSt Patricks |
| 01 Oct 21 | r29 | Finn Harps FCFinn Harps FC | 2 - 2 | DundalkDundalk |
| 01 Oct 21 | r29 | ShamrockShamrock | 2 - 1 | Derry CityDerry City |
| 02 Oct 21 | r29 | Longford TownLongford Town | 1 - 4 | BohemiansBohemians |
| 02 Oct 21 | r29 | SligoSligo | 1 - 1 | Waterford FCWaterford FC |
| |
| 08 Oct 21 | r30 | DundalkDundalk | 1 - 0 | ShamrockShamrock |
| |
| 15 Oct 21 | r31 | Derry CityDerry City | 1 - 0 | St PatricksSt Patricks |
| 15 Oct 21 | r31 | Waterford FCWaterford FC | 4 - 1 | Finn Harps FCFinn Harps FC |
| 15 Oct 21 | r31 | BohemiansBohemians | 1 - 1 | DundalkDundalk |
| 15 Oct 21 | r31 | DroghedaDrogheda | 2 - 0 | Longford TownLongford Town |
| 15 Oct 21 | r31 | ShamrockShamrock | 2 - 0 | SligoSligo |
| |
| 18 Oct 21 | r25 | ShamrockShamrock | 1 - 1 | BohemiansBohemians |
| |
| 23 Oct 21 | r32 | Longford TownLongford Town | 0 - 1 | ShamrockShamrock |
| 23 Oct 21 | r32 | Finn Harps FCFinn Harps FC | 2 - 2 | SligoSligo |
| 24 Oct 21 | r32 | DroghedaDrogheda | 1 - 0 | Derry CityDerry City |
| 25 Oct 21 | r32 | BohemiansBohemians | 1 - 2 | Waterford FCWaterford FC |
| 25 Oct 21 | r32 | St PatricksSt Patricks | 1 - 0 | DundalkDundalk |
| |
| 29 Oct 21 | r33 | Derry CityDerry City | 1 - 1 | BohemiansBohemians |
| 29 Oct 21 | r33 | Longford TownLongford Town | 1 - 4 | St PatricksSt Patricks |
| 29 Oct 21 | r33 | ShamrockShamrock | 3 - 0 | Finn Harps FCFinn Harps FC |
| 29 Oct 21 | r33 | SligoSligo | 2 - 0 | DroghedaDrogheda |
| 29 Oct 21 | r33 | DundalkDundalk | 1 - 0 | Waterford FCWaterford FC |
| |
| 01 Nov 21 | r30 | St PatricksSt Patricks | 2 - 2 | BohemiansBohemians |
| 01 Nov 21 | r30 | SligoSligo | 1 - 0 | Longford TownLongford Town |
| 01 Nov 21 | r30 | Finn Harps FCFinn Harps FC | 0 - 0 | DroghedaDrogheda |
| 02 Nov 21 | r30 | Waterford FCWaterford FC | 2 - 2 | Derry CityDerry City |
| |
| 04 Nov 21 | r35 | DroghedaDrogheda | 0 - 1 | DundalkDundalk |
| |
| 05 Nov 21 | r34 | Waterford FCWaterford FC | 1 - 3 | ShamrockShamrock |
| 05 Nov 21 | r34 | St PatricksSt Patricks | 0 - 3 | SligoSligo |
| 05 Nov 21 | r34 | Finn Harps FCFinn Harps FC | 1 - 1 | Derry CityDerry City |
| 07 Nov 21 | r34 | DundalkDundalk | 2 - 0 | Longford TownLongford Town |
| 07 Nov 21 | r34 | BohemiansBohemians | 2 - 1 | DroghedaDrogheda |
| |
| 12 Nov 21 | r35 | St PatricksSt Patricks | 2 - 2 | Finn Harps FCFinn Harps FC |
| 12 Nov 21 | r35 | Derry CityDerry City | 2 - 0 | SligoSligo |
| 12 Nov 21 | r35 | BohemiansBohemians | 3 - 1 | ShamrockShamrock |
| 13 Nov 21 | r35 | Longford TownLongford Town | 1 - 1 | Waterford FCWaterford FC |
| |
| 19 Nov 21 | r36 | Waterford FCWaterford FC | 0 - 0 | St PatricksSt Patricks |
| 19 Nov 21 | r36 | Finn Harps FCFinn Harps FC | 5 - 0 | Longford TownLongford Town |
| 19 Nov 21 | r36 | DundalkDundalk | 1 - 2 | Derry CityDerry City |
| 19 Nov 21 | r36 | ShamrockShamrock | 2 - 1 | DroghedaDrogheda |
| 19 Nov 21 | r36 | SligoSligo | 1 - 1 | BohemiansBohemians |
| |
| 26 Nov 21 | r00 | Waterford FCWaterford FC | 1 - 2 | UCDUCD |
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