Wyoming Highway 430 is a state road in south-central Sweetwater County, Wyoming, USA that runs from the Wyoming-Colorado State Line to Rock Springs.

Wyoming Highway 430 begins its south end at the Wyoming-Colorado State Line near Hiawatha Camp, Colorado. The roadway continues south into Colorado as Moffat County Route 10N, an unimproved highway all the way to Colorado State Highway 318 near Dinosaur National Monument. WYO 430 heads north-northwest from the state line towards Rock Springs. Once WYO 430 enters Rock Springs, it intersects Wyoming Highway 376 (Rock Springs Beltway) at approximately 53 miles (85 km) via Marchant Street. Here WYO 430 comes to its northern end.

The entire route is in Sweetwater County.