Trevor (Welsh: Trefor) is a village in Wrexham County Borough, Wales.

Its name is an anglicised version of the Welsh place-name Trefor, meaning "large village".

This was one of the old townships of the parish of Llangollen, giving its name to both a powerful landowning family whose ancestral home was in the township, and to the later industrial settlement represented by the modern village.

In common with neighbouring Froncysyllte, Trevor is largely made up of nineteenth- and twentieth-century cottages for workers in the area's traditional industries of limestone quarrying and brick-making.

However the nearby Llangollen Railway aims to extend eastwards to Ruabon,[citation needed] which may include rebuilding and full restoration of the station as part of the work.