Gary Forby (born January 4, 1945) is a former Democratic member of the Illinois Senate. He represented the 59th District from 2003 to 2017. The 59th Senate District includes Franklin, Hamilton, Williamson, Saline, Gallatin, Hardin, Pope, Massac, Johnson, Union, Pulaski and Alexander counties in Southern Illinois. He was previously a member of the Illinois House of Representatives from 2001 to 2003 before being appointed to fill former State Senator Larry Woolard’s vacant seat in 2003. He was defeated in his bid for another term on November 8, 2016.