New York State Route 25A

New York State Route 25A
NY 25A highlighted in red
Route information
Auxiliary route of NY 25
Maintained by NYSDOT and NYCDOT
Length	72.91 mi[1] (117.34 km)
Existed	c. 1927[2][3]–present
Major junctions
West end	I-495 in Long Island City
Major intersections	NY 25 in Long Island City I-278 in Woodside Grand Central Parkway in Corona I-678 in Flushing I-295 in Bayside Cross Island Parkway in Bayside Sunken Meadow State Parkway in Fort Salonga NY 25 in Smithtown CR 97 in Stony Brook NY 347 in Mount Sinai CR 46 in East Shoreham
East end	NY 25 in Calverton
Location
Country	United States
State	New York
Counties	Queens, Nassau, Suffolk
Highway system
New York Highways Interstate US State Reference Parkways
← NY 25 → NY 25B

New York State Route 25A (NY 25A) is a state highway on Long Island in New York, United States. It serves as the main east–west route for most of the North Shore of Long Island, running for 73 miles (117 km) from Interstate 495 (I-495) near the Queens–Midtown Tunnel in the New York City borough of Queens to NY 25 in Calverton, Suffolk County. The highway is a northern alternate route of NY 25, which follows a more inland routing along Jericho Turnpike.

The route is known for its scenic path through decidedly lesser-developed areas such as Brookville, Fort Salonga, Centerport, and Roslyn. It is known by various names along its routing, the most prominent of which include Northern Boulevard, North Hempstead Turnpike, Main Street, Fort Salonga Road, and North Country Road. It merges with NY 25 for approximately 1.5 miles (2.4 km) in Smithtown.