| Wed 30 Jun | 19:30 | Pre-Season Friendly | Bridon Ropes vs. Erith Town | 2 - 5 | Match Centre |
| Sat 03 Jul | 13:00 | Pre-Season Friendly | Erith Town vs. Phoenix Sports | 0 - 4 | Match Centre |
| Sat 10 Jul | 15:00 | Pre-Season Friendly | Snodland Town FC vs. Erith Town | 2 - 0 | Match Centre |
| Tue 13 Jul | 19:30 | Pre-Season Friendly | Erith Town vs. Stansfeld FC | 3 - 0 | Match Centre |
| Sat 17 Jul | 14:00 | Pre-Season Friendly | Forest Hill Park FC vs. Erith Town | 0 - 7 | Match Centre |
| Wed 21 Jul | 19:45 | Pre-Season Friendly | Erith Town vs. Balham FC | 3 - 1 | Match Centre |
| Sat 24 Jul | 15:00 | Pre-Season Friendly | Margate FC vs. Erith Town | 1 - 2 | Match Centre |
| Sat 31 Jul | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Lordswood | 4 - 1 | Match Centre |
| Tue 03 Aug | 19:45 | Southern Counties East Football League - Premier Division 2021/22 | Glebe vs. Erith Town | 4 - 0 | Match Centre |
| Sat 07 Aug | 15:00 | Emirates FA Cup 2021/22 | Sheerwater FC vs. Erith Town | 0 - 2 | Match Centre |
| Sat 14 Aug | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Crowborough Athletic vs. Erith Town | 0 - 1 | Match Centre |
| Wed 18 Aug | 19:45 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Erith & Belvedere | 0 - 2 | Match Centre |
| Sat 21 Aug | 15:00 | Emirates FA Cup 2021/22 | Sevenoaks Town FC vs. Erith Town | 2 - 2 | Match Centre |
| Wed 25 Aug | 19:30 | Emirates FA Cup 2021/22 | Erith Town vs. Sevenoaks Town FC | 1 - 2 | Match Centre |
| Sat 28 Aug | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Deal Town vs. Erith Town | 1 - 2 | Match Centre |
| Mon 30 Aug | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Holmesdale FC | 1 - 0 | Match Centre |
| Sat 04 Sep | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Punjab United vs. Erith Town | 3 - 4 | Match Centre |
| Sat 11 Sep | 15:00 | Buildbase FA Vase 2021/22 | Erith Town vs. SC Thamesmead | 2 - 0 | Match Centre |
| Wed 15 Sep | 19:45 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Tower Hamlets FC | 3 - 1 | Match Centre |
| Wed 22 Sep | 19:30 | Kent Senior Trophy 2021/22 | Erith Town vs. Fisher | 1 - 0 | Match Centre |
| Sat 25 Sep | 15:00 | Buildbase FA Vase 2021/22 | Erith Town vs. Sheppey United | 2 - 3 | Match Centre |
| Sat 02 Oct | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Canterbury City vs. Erith Town | 2 - 2 | Match Centre |
| Tue 05 Oct | 19:45 | Southern Counties East Football League - Premier Division 2021/22 | Welling Town vs. Erith Town | 0 - 2 | Match Centre |
| Sat 09 Oct | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Hollands & Blair | 3 - 0 | Match Centre |
| Wed 13 Oct | 19:30 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Fisher | 3 - 1 | Match Centre |
| Sat 16 Oct | 15:00 | Kent Senior Trophy 2021/22 | Meridian VP vs. Erith Town | 0 - 5 | Match Centre |
| Sat 23 Oct | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Bearsted vs. Erith Town | 0 - 3 | Match Centre |
| Wed 27 Oct | 19:45 | LDNFA | Clapton FC vs. Erith Town | 0 - 3 | Match Centre |
| Sat 30 Oct | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Sheppey United | 0 - 2 | Match Centre |
| Sat 06 Nov | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | K Sports vs. Erith Town | 2 - 5 | Match Centre |
| Tue 09 Nov | 19:45 | LDNFA | Cray Valley PM FC vs. Erith Town | 1 - 3 | Match Centre |
| Sat 13 Nov | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Crowborough Athletic | 2 - 3 | Match Centre |
| Sat 20 Nov | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Lordswood vs. Erith Town | 1 - 2 | Match Centre |
| Sat 27 Nov | 15:00 | Kent Senior Trophy 2021/22 | Hollands & Blair vs. Erith Town | 2 - 0 | Match Centre |
| Tue 30 Nov | 19:30 | Southern Counties East Football League - Premier Division 2021/22 | Tunbridge Wells vs. Erith Town | 3 - 2 | Match Centre |
| Sat 04 Dec | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Holmesdale FC vs. Erith Town | 1 - 2 | Match Centre |
| Wed 08 Dec | 19:30 | SCEFLCC | Erith Town vs. Tower Hamlets FC | 1 - 2 | Match Centre |
| Sat 11 Dec | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Rusthall FC | 4 - 2 | Match Centre |
| Sat 18 Dec | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Sheppey United vs. Erith Town | P - P | Match Centre |
| Mon 27 Dec | 13:00 | Southern Counties East Football League - Premier Division 2021/22 | Tower Hamlets FC vs. Erith Town | 3 - 2 | Match Centre |
| Mon 03 Jan | 13:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Welling Town | 1 - 2 | Match Centre |
| Sat 08 Jan | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Kennington FC | 1 - 2 | Match Centre |
| Sat 22 Jan | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Fisher vs. Erith Town | 2 - 0 | Match Centre |
| Sat 29 Jan | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Chatham Town vs. Erith Town | Match Centre | |
| Sat 05 Feb | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Tunbridge Wells | Match Centre | |
| Sat 12 Feb | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Rusthall FC vs. Erith Town | Match Centre | |
| Tue 15 Feb | 19:45 | Southern Counties East Football League - Premier Division 2021/22 | Sheppey United vs. Erith Town | Match Centre | |
| Sat 19 Feb | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Bearsted | Match Centre | |
| Sat 26 Feb | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Canterbury City | Match Centre | |
| Sat 05 Mar | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Hollands & Blair vs. Erith Town | Match Centre | |
| Sat 12 Mar | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Lordswood vs. Erith Town | Match Centre | |
| Sat 26 Mar | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Punjab United | Match Centre | |
| Sat 02 Apr | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Kennington FC vs. Erith Town | Match Centre | |
| Sat 09 Apr | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. K Sports | Match Centre | |
| Sat 16 Apr | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith & Belvedere vs. Erith Town | Match Centre | |
| Mon 18 Apr | 19:30 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Glebe | Match Centre | |
| Sat 23 Apr | 15:00 | Southern Counties East Football League - Premier Division 2021/22 | Erith Town vs. Chatham Town | Match Centre |