Dirleton is a village and civil parish in East Lothian, Scotland approximately 20 miles (32 km) east of Edinburgh on the A198. It contains 7,500 acres (30 km2). Dirleton lies between North Berwick (east), Gullane (west), Fenton Barns (south) and the Yellowcraigs nature reserve, Archerfield Estate and the Firth of Forth (north). Gullane parish was joined to Dirleton parish in 1612 by an Act of Parliament because "Golyn is ane decaying toun, and Dirleton is ane thriven place."

East Lothian is one of the 32 council areas of Scotland, as well as a historic county, registration county and lieutenancy area. The county was called Haddingtonshire until 1921.