State Route 83 (SR-83) is a 30.726-mile (49.449 km) state highway in eastern Box Elder County, Utah, United States, that connects the towns of Corinne and Howell and provides access to Golden Spike National Historic Site from the east, as well as Thiokol's facility.

The route starts in the western part of Corinne at SR-13, at the intersection of 4800 West and Promontory Road.

SR-83 proceeds to the northwest along Promontory Road, leaving Corinne and continuing in this direction past largely open land for about 14 miles (23 km).

After this junction, the route starts to turn northward, passing Lampo Junction, a local access road to Golden Spike National Historical Park), and the Thiokol rocket plant and test range.

In 1962, the portion west of Lampo Junctionwas transferred back to local jurisdiction, and the route was extended north from Lampo Junction to the Howell interchange of the former Utah State Route 5 (modern day Interstate 84).