Lock Berlin is a hamlet in the Town of Galen, Wayne County, New York, United States.
It is located four miles (6 km) west of the Village of Clyde and three miles (5 km) northeast of the hamlet of Lyons, at an elevation of 404 feet (123 m).
N.Y. Route 31 passes just south of Lock Berlin.
It was a double-chamber lock built in 1841, and had a lift of 7.70 feet (2.35 m) to the west.
This article about a location in Wayne County, New York is a stub.