Gwalchmai (Welsh pronunciationⓘ) is a village on Anglesey in north Wales, within the Trewalchmai community.

Gwalchmai facilities include a village shop, a pub called the Gwalchmai Hotel, a mechanic / car sales business, a doctors' surgery, a church, two chapels, and a community hall.

The ward (which includes Gwalchmai and Bryngwran) is represented on Anglesey County Council by Councillor Bob Parry OBE, who leads the Plaid Cymru Group.

Trewalchmai Community Council normally meets on a monthly basis to consider local issues.

The games were held in Gibraltar but due to lack of pitches there Anglesey was deemed to be a better host.