Wyoming Highway 431 (WYO 431) is a 30.19-mile-long (48.59 km) Wyoming state road in western Washakie County and a small part of northern Hot Springs County.

[2] WYO 431 proceeds northeast from Highway 120 until it reaches and crosses Gooseberry Creek.

Here WYO 431 turns due eastward and roughly parallels the north side of the creek before crossing into Washakie County at approximately 6 miles (9.7 km).

A mile later, the Gooseberry Scenic Area is reached, also named after the creek, which lies on the north side of the highway.

[3] Nearing its end, Highway 431 turns southeasterly, still following Gooseberry Creek, before reaching its eastern end at US 20/WYO 789 and the southern terminus of Wyoming Highway 432 southwest of Worland.