University Gardens is a hamlet and a census-designated place in Nassau County, on the North Shore of Long Island, in New York, United States. It is located within the Town of North Hempstead and is part of the Greater Great Neck area. The population was 4,358 at the time of the 2020 census. The University Gardens CDP includes the University Gardens subdivision and the other unincorporated areas between it and the Nassau/ Queens line, such as Great Neck Terrace.