Charles Grandison Williams (October 18, 1829 – March 30, 1892) was an American lawyer and Republican politician.

He represented the state of Wisconsin for ten years in the United States House of Representatives, from 1873 to 1883, and was chairman of the House Foreign Affairs Committee.

He moved to Wisconsin in 1856, after the death of his first wife, and settled in Janesville, in Rock County.

[1] He was admitted to the bar and commenced practice in Janesville, where he would form a law partnership with David Noggle and Henry A. Patterson.

They had a daughter, Kate Anna Williams (born 1861), and a son, Ward David Williams (born September 4, 1864, and died March 28, 1926, in Baltimore, Maryland).