Cold Spring Harbor is a station on the Long Island Rail Road's Port Jefferson Branch.

It is located at West Pulaski Road (CR 11) and East Gate Drive, just south of Woodbury Road in West Hills, Suffolk County, New York.

[4] At some point between 1901 and 1902, the station was moved east to the present-day Cold Springs Hills section of the hamlet of West Hills and assumed its current name of Cold Spring Harbor.

[4][6] In 1970, the station was electrified, along with the rest of the Port Jefferson Branch between Mineola and Huntington.

[7] Since 2007, the station has served as the western terminus of New York State Bicycle Route 25A.