New York State Route 27A is a state highway located in Suffolk County, New York. It runs parallel to the more prominent New York State Route 27, providing access to various communities and attractions along the South Shore of Long Island. The route stretches approximately 20 miles, connecting the towns of Babylon and East Hampton. The highway serves as an important local road, facilitating travel for residents and visitors. It features a mix of commercial areas, residential neighborhoods, and scenic landscapes, making it a vital corridor for both transportation and tourism in the region.