The Grand Central Parkway (GCP) is a 14.61-mile (23.51 km) controlled-access parkway that stretches from the Triborough Bridge in New York City to Nassau County on Long Island. At the Queens–Nassau border, it becomes the Northern State Parkway, which runs across the northern part of Long Island through Nassau County and into Suffolk County, where it ends in Hauppauge. The westernmost stretch also carries a short stretch of Interstate 278 (I-278). The parkway runs through Queens and passes the Cross Island Parkway, Long Island Expressway, LaGuardia Airport and Citi Field, home of the New York Mets. The parkway is designated New York State Route 907M (NY 907M), an unsigned reference route. Despite its name, the Grand Central Parkway was not named after Grand Central Terminal.

A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway, and expressway. Other similar terms include throughway or thruway and parkway. Some of these may be limited-access highways, although this term can also refer to a class of highways with somewhat less isolation from other traffic.