| State: | UT |
| Type: | SR |
| Route: | 81 |
| Section: | 114 |
| Map Custom: | yes |
| Length Mi: | 2.475 |
| Length Round: | 3 |
| Length Ref: | [1] |
| Established: | 1935 |
| Direction A: | South |
| Terminus A: | in Box Elder County |
| Direction B: | North |
| Terminus B: | Main Street in Fielding |
| Previous Type: | I |
| Previous Route: | 80 |
| Next Type: | SR |
| Next Route: | 82 |
State Route 81 is a state highway in the U.S. state of Utah. It is a short connector road, only 2.475miles long, that connects SR-30 with the town of Fielding in Box Elder County.
The route starts at its intersection with SR-30 south of Fielding in Box Elder County, Utah. It starts out travelling west, then meanders northwest for approximately 1miles before turning north as 4000 West and continuing until its terminus at Main Street in the center of Fielding.[1]
The route was established in 1935 by the Utah state legislature from US-91/SR-1 east to Fielding and south to SR-154. In 1969, the section from US-91 east to Fielding was cancelled, and SR-82 replaced the section of SR-154 at the south end. There have been no changes since.