| State: | NH |
| Type: | NH |
| Route: | 75 |
| Map Custom: | yes |
| Map Alt: | Map of New Hampshire Route 75 |
| Map Notes: | Map of Strafford County in southeastern New Hampshire with NH 75 highlighted in red |
| Length Mi: | 5.453 |
| Direction A: | West |
| Terminus A: | in Farmington |
| Junction: | in Milton |
| Direction B: | East |
| Terminus B: | in Milton |
| Counties: | Strafford |
| Previous Type: | NH |
| Previous Route: | 63 |
| Next Type: | NH |
| Next Route: | 77 |
New Hampshire Route 75 (abbreviated NH 75) is a 5.453adj=midNaNadj=mid secondary east–west highway in Strafford County in southeastern New Hampshire. It runs from Farmington to Milton.
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.