Archibald Williams (June 10, 1801 – September 21, 1863) was a United States federal judge.
Born in Montgomery County, Kentucky, Williams read law to enter the bar in 1828. He was in private practice in Quincy, Illinois beginning in 1829. He was the United States Attorney for the District of Illinois from 1849 to 1853. He served in both the Illinois House of Representatives and the Illinois State Senate.