State Route 230 (SR 230) is a state highway in the U.S. state of Nevada. It is a southern loop route off of Interstate 80 (I-80) between Elko and Wells, serving the communities of Deeth and Welcome. The road follows a "U" shaped path entirely within Elko County, nearing Humboldt National Forest. The road was constructed by the early 1960s and designated a state highway by the early 1990s.

SR 230 begins at I-80 at a diamond interchange, known as the Starr Valley Interchange, exit 333 of I-80. The road heads southward into the community of Deeth, where it meets CR 753, which heads eastward back to I-80. Leaving Deeth, the road is concurrent with CR 701 as Deeth Starr Valley Road as it heads southeast. After crossing over Marys River, SR 230 meets Starr Valley Loop, which continues south to SR 229, and crosses the Humboldt River, heading eastward. After about 1.7 miles (2.7 km), the route turns northeast, passing by the Humboldt National Forest but not entering it. The road then turn abruptly north to meet its end at a diamond interchange with I-80, known as the Welcome Interchange, exit 343 of I-80.

The road has existed as Starr Valley Road since 1962, even before I-80 replaced U.S. Route 40 (US 40) in the area. After I-80 was designated in the area, the bridge over I-80 in Deeth was completed in 1965, and the bridge at the east terminus in 1968. The bridges over the Humboldt and Mary's Rivers were completed in 1983. It was not until 1992, however, until this road was formally designated a state highway by NDOT. Since establishment, the alignment of the route has not changed.

The entire route is in Elko County.