Northop is a village, community and electoral ward situated in Flintshire, Wales, approximately 12 miles west of the city of Chester, midway between Mold and Flint, and situated just off junction 33 of the A55 North Wales Expressway. At the 2001 Census, the population of Northop was 2,983, increasing to 3,049 at the 2011 census. The community includes Sychdyn.

The A55, also known as the North Wales Expressway, is a major road in Wales and England, connecting Cheshire and North Wales. The vast majority of its length from Chester to Holyhead is a dual carriageway primary route, with the exception of the Britannia Bridge over the Menai Strait and several short sections where there are gaps in between the two carriageways. All junctions are grade separated apart from a roundabout east of Penmaenmawr and another nearby in Llanfairfechan. Initially, the road ran from Chester to Bangor. In 2001, it was extended across Anglesey to the ferry port of Holyhead parallel to the A5. The road improvements have been part funded with European money, under the Trans-European Networks programme, as the route is designated part of Euroroute E22.