Long Marston is a village and civil parish in the Harrogate district of North Yorkshire, England. It is situated on the B1224 road from Wetherby to York, 7 miles (11 km) west of York. The civil parish includes the hamlets of Hutton Wandesley, immediately south of the village of Long Marston, and Angram, 1.5 miles (2.4 km) south east of Hutton Wandesley.
Until 1974 Long Marston was in the West Riding of Yorkshire.
The Battle of Marston Moor was fought just west of the village. There is a monument to the battle on the Tockwith Road to the north of the village.