John Davidson (Illinois politician)

John Davidson (August 31, 1924 – August 21, 2012) was an American politician.

Born in West Point, Mississippi, Davidson graduated from Petersburg, Illinois High School. Davidson served in the Illinois Senate 1973-1993. He served in the United States Navy Air Corp during World War II and was a chiropractor. He served on the Sangamon County, Illinois Board and was chairman of the board prior to being elected to the Illinois Senate. He died in Springfield, Illinois.