2021 Fixtures for Beaumaris B
| Tue 25th May | Llanfairfechan A | Away | Tue 27th Jul | Llanfairfechan A | Home | |
| Tue 1st Jun | Caernarfon | Home | Tue 3rd Aug | Caernarfon | Away | |
| Tue 8th Jun | Gwyngyll | Away | Tue 10th Aug | Gwyngyll | Home | |
| Tue 15th Jun | DinasCriccieth2 | Home | Tue 17th Aug | DinasCriccieth2 | Away | |
| Tue 22nd Jun | Porthaethwy | Away | Tue 24th Aug | Porthaethwy | Home | |
| Tue 29th Jun | Bye | Away | Tue 31st Aug | Bye | Home | |
| Tue 6th Jul | Craig Y Don B | Home | Tue 7th Sep | Craig Y Don B | Away | |
| Tue 13th Jul | Dwygyfylchi B | Away | Tue 14th Sep | Dwygyfylchi B | Home | |
| Tue 20th Jul | Bethesda | Home | Tue 21st Sep | Bethesda | Away |