Greenvale is a station on the Long Island Rail Road's Oyster Bay Branch.

The station is located off Helen Street, between Glen Cove Avenue and Glen Cove Road in the Incorporated Village of Roslyn Harbor, in Nassau County, New York.

The passenger station has never existed as anything else other than a sheltered platform.

[3] On May 17, 1891, it was demolished by a locomotive that collided with a horse whose hoof was stuck in the switching apparatus, resulting in both the death of the horse and two crew members.

[3][7] New shelters were built on both sides of the tracks in 2000 on high-level platforms that were installed in 1997 to make the station compliant with the Americans with Disabilities Act of 1990 and compatible with the railroad's new C3 bilevel railcars.