North Bay Shore is an unincorporated neighborhood on Long Island in the Town of Islip in Suffolk County, New York, United States. The area is a suburb of New York City. The hamlet of North Bay Shore is within the northern part of the CDP of Bay Shore, New York. The census-designated place (CDP) named North Bay Shore is north of, and adjacent to, the hamlet named North Bay Shore. The CDP of North Bay Shore contains the hamlet of Pine Aire and part of the hamlet of Brentwood.