Alva is an unincorporated community in north central Crook County, Wyoming, United States. It lies along WYO 24 34.9 miles north of the town of Sundance, the county seat of Crook County and 9.7 miles away from Hulett, Wyoming. Its elevation is 3,993 feet (1,217 m), and it is located at (44°41′41″N104°26′29″W) (44.694707, -104.441342).