New Hampshire Route 88 (abbreviated NH 88) is a 6.676-mile-long (10.744 km) east–west state highway in Rockingham County in southeastern New Hampshire, United States.

The eastern terminus is in Hampton Falls at U.S. Route 1 (Lafayette Road).

The highway heads southeast, roughly paralleling NH 101 for 1.1 miles before intersecting NH 27/NH 111 east of town.

Signage on NH 108 approaching this intersection is ambiguous as to whether Holland Way (the official name of this stretch) is part of NH 88, or simply an access road "To 88".

The highway continues for 5.5 miles (8.9 km), passes underneath Interstate 95 without an interchange and then terminates at US 1 in the center of town, just feet from the eastern terminus of NH 84.