Alphamstone is a village and civil parish in Essex, England.

[1] The parish is 1,709 acres (2.67 sq mi; 692 ha) with a geology of fertile clay-soils,[2] and is at an elevation of 216 feet (66 m) above sea level.

The population is included in the civil parish of Lamarsh.

[3] The village is a mile west of the River Stour, which forms the Essex-Suffolk county-border in the local area.

[6] It is about 2 miles (3.2 km) from the nearest railway station at Bures on the Sudbury Branch Line.