Glenwood Landing is a hamlet and census-designated place in Nassau County, New York. The population was 3,948 at the time of the 2020 census. Glenwood Landing is mainly within the Town of Oyster Bay but a small section in the southwest corner is in the Town of North Hempstead. It is a part of the North Shore School District. It is considered part of the greater Glen Cove area, which is anchored by the City of Glen Cove.