New Hampshire Route 75 (abbreviated NH 75) is a 5.453-mile-long (8.776 km) secondary east–west highway in Strafford County in southeastern New Hampshire.

The western terminus of NH 75 is in Farmington at New Hampshire Route 11.

The eastern terminus is in Milton at New Hampshire Route 125 just east of the Spaulding Turnpike.

The entire route is in Strafford County.

This New Hampshire road-related article is a stub.