North Wales was a European Parliament constituency which roughly covered the geographic region of North Wales, from 1979 until 1999. It was held by the Conservative Party from 1979 until 1989, during which time it was their only seat in Wales.

Prior to its uniform adoption of proportional representation in 1999, the United Kingdom used first-past-the-post for the European elections in England, Scotland and Wales. The European Parliament constituencies used under that system were smaller than the later regional constituencies and only had one Member of the European Parliament each.

The seat became part of the much larger Wales constituency in 1999.

1979–1984: Anglesey, Caernarfon, Conwy, Denbigh, Flintshire East, Flintshire West, Merionnydd, Montgomery, Wrexham.

1984–1994: Alyn and Deeside, Caernarfon, Clwyd North West, Clwyd South West, Conwy, Delyn, Meirionnydd Nant Conwy, Montgomery, Wrexham, Ynys Mon.

1994–1999: Alyn and Deeside, Caernarfon, Clwyd North West, Clwyd South West, Conwy, Delyn, Wrexham, Ynys Mon.