Seaton Delaval is a village and former civil parish, now in the parish of Seaton Valley, in Northumberland, England, with a population of 4,371. The largest of the five villages in Seaton Valley, it is the site of Seaton Delaval Hall, completed by Sir John Vanbrugh in 1727.

Northumberland is a ceremonial county in North East England, bordering Scotland. It is bordered by the Scottish Borders to the north, the North Sea to the east, Tyne and Wear and County Durham to the south, and Cumbria to the west. The town of Blyth is the largest settlement.