New Hampshire Route 202A (NH 202A) is a 14.639-mile-long (23.559 km) east–west state highway in Strafford and Rockingham counties in southeastern New Hampshire, serving as a northern loop of U.S. Route 202.

The highway runs into the center of town, intersecting and briefly overlapping NH 126 before turning eastward.

NH 202A continues east, passing briefly through the northern corner of Barrington before crossing into the city of Rochester.

The road proceeds east into downtown, passing under the Spaulding Turnpike (US 202 / NH 16) without an interchange.

Traffic continuing on South Main Street transitions directly onto NH 108 southbound.