| Walter J. Gex III | |
| Office: | Senior Judge of the United States District Court for the Southern District of Mississippi |
| Term Start: | March 24, 2004 |
| Term End: | November 12, 2020 |
| Office1: | Judge of the United States District Court for the Southern District of Mississippi |
| Term Start1: | February 26, 1986 |
| Term End1: | March 24, 2004 |
| Appointer1: | Ronald Reagan |
| Predecessor1: | Seat established by 98 Stat. 333 |
| Successor1: | Louis Guirola Jr. |
| Birth Date: | 29 March 1939 |
| Birth Place: | Bay St. Louis, Mississippi, U.S. |
| Death Place: | Diamondhead, Mississippi, U.S. |
| Education: | University of Mississippi (B.A.) University of Mississippi Law School (LL.B.) |
Walter Joseph Gex III[1] (March 29, 1939 – November 12, 2020) was a United States district judge of the United States District Court for the Southern District of Mississippi.
Born in Bay St. Louis, Mississippi, Gex received a Bachelor of Arts degree from the University of Mississippi in 1962 and a Bachelor of Laws from the University of Mississippi Law School in 1963. He was in private practice in Jackson, Mississippi from 1963 to 1972, and then in Bay St. Louis from 1972 to 1986.[2]
On January 29, 1986, Gex was nominated by President Ronald Reagan to a new seat on the United States District Court for the Southern District of Mississippi created by 98 Stat. 333. Gex was confirmed by the United States Senate on February 25, 1986, and received his commission on February 26, 1986. He assumed senior status on March 24, 2004.[2]
Gex died on November 12, 2020, in Diamondhead, Mississippi.[3]