North Dakota Highway 91 (Wells County) should not be confused with North Dakota Highway 91 (Pembina County).
| State: | ND |
| Type: | ND |
| Route: | 91 |
| Length Mi: | 0.523 |
| Length Round: | 3 |
| Map Custom: | yes |
| Direction A: | West |
| Terminus A: | in Harvey |
| Direction B: | East |
| Terminus B: | in Harvey |
| Counties: | Wells |
| Previous Type: | ND |
| Previous Route: | 89 |
| Next Type: | ND |
| Next Route: | 97 |
North Dakota Highway 91 (ND 91) is a 0.523adj=midNaNadj=mid east–west state highway in the U.S. state of North Dakota. ND 91's western terminus is at U.S. Route 52 (US 52) in Harvey, and the eastern terminus is at ND 3 in Harvey.[1]