| John A. Williams | |
| Office: | Judge of the United States District Court for the Eastern District of Arkansas |
| Term Start: | September 22, 1890 |
| Term End: | July 7, 1900 |
| Appointer: | Benjamin Harrison |
| Predecessor: | Henry Clay Caldwell |
| Successor: | Jacob Trieber |
| Birth Name: | John A. Williams |
| Birth Date: | 1 May 1835 |
| Birth Place: | Remsen, New York |
| Death Place: | Manitou Springs, Colorado |
John A. Williams (May 1, 1835 – July 7, 1900) was a United States district judge of the United States District Court for the Eastern District of Arkansas.
Born in Remsen, New York, Williams was a merchant in Delafield, Wisconsin until 1860, and clerk of the County Court for Waukesha County, Wisconsin until 1861. He was in the United States Army during the American Civil War from 1861 to 1865, achieving the rank of captain. He was then in private practice in Pine Bluff, Arkansas from 1866 to 1877. He became a Judge of the Eleventh Judicial Circuit Court of Arkansas, serving in that office until 1882, and thereafter returning to private practice in Pine Bluff.
On August 14, 1890, Williams was nominated by President Benjamin Harrison to a seat on the United States District Court for the Eastern District of Arkansas vacated by Judge Henry Clay Caldwell. Williams was confirmed by the United States Senate on September 22, 1890, and received his commission the same day. Williams served in that capacity until his death on July 7, 1900, in Manitou Springs, Colorado.