New Hampshire Route 101C

New Hampshire Route 27
Map of southeastern New Hampshire with NH 27 highlighted in red
Route information
Maintained by NHDOT
Length:	37.621 mi (60.545 km)
Major junctions
West end:	US 3 / NH 28 in Hooksett
	NH 101 in Exeter / Hampton US 1 in Hampton
East end:	NH 1A in Hampton Beach
Location
Counties:	Merrimack, Rockingham
Highway system
New Hampshire Highway System Interstate U.S. State Turnpikes ← NH 26 NH 28 → ← NH 101A NH 101D →

New Hampshire Route 27 (abbreviated NH 27) is a 37.621-mile-long (60.545 km) long east–west highway in southeastern New Hampshire. The western terminus of NH 27 is in Hooksett at U.S. Route 3 and New Hampshire Route 28 north of Manchester. The eastern terminus is in Hampton Beach at New Hampshire Route 1A, which runs along the New Hampshire coastline adjacent to the Atlantic Ocean.

NH 27 is not generally used as a through route due to the presence of the New Hampshire Route 101 expressway, which NH 27 parallels for its entire length. However, NH 27 does service many of the communities which NH 101 bypasses.

NH 27 was formerly NH 101B from Hooksett to the intersection with NH 43 in Candia.

The section of NH 27 between NH 43 in Candia (the former eastern terminus of NH 101B) and the eastern terminus of the NH 27/New Hampshire Route 107 concurrency in Raymond is part of New Hampshire Route 101 Business, although this segment is not signed as such in the field.