Witter Springs (formerly Witter's Springs and Witter) is a former settlement in Lake County, California. It was located 3 miles (4.8 km) northwest of Upper Lake, at an elevation of 1476 feet (450 m).
The Witter's Springs post office operated from 1873 to 1880. The Witter post office opened in 1901, moved and changed its name to Witter Springs in 1913. The ZIP code for Witter Springs is 95493.