Charles Gus Johnson (October 12, 1880 – October 14, 1957) served as California State Treasurer, 1923–1956. From 1913–1921, Johnson served as State Superintendent of Weights and Measures. He was the longest-serving state treasurer. He was forced to resign on October 31, 1956 after stories began to emerge over him funneling state funds into personal loans. He was a Republican.
Johnson was born on October 12, 1880 in Sweden.
Johnson has three children: Virginia L. Johnson, Claire Fitzgerald, and George W. Johnson.
Charles Gus Johnston died on October 14, 1957 in Sacramento, California at age 77.