| Office: | Louisiana State Senator for Caddo and Bossier parishes (later District 37) |
| Term Start: | 1956 |
| Term End: | 1980 |
| Preceded: | Charles Emery Tooke Jr. B. H. "Johnny" Rogers |
| Succeeded: | Sydney B. Nelson |
| Birth Name: | Jackson Beauregard Davis |
| Birth Date: | 27 March 1918 |
| Birth Place: | Rapides Parish, Louisiana, U.S. |
| Death Place: | Shreveport, Louisiana, U.S. |
| Residence: | Shreveport, Louisiana, U.S. |
| Occupation: | Lawyer |
| Children: | 4 |
| Parents: | Jesse Octo Litha Pittman Davis |
| Alma Mater: | Louisiana College Northwestern State University Louisiana State University |
| Footnotes: | (1) A Democrat, Davis repudiated U.S. President Lyndon B. Johnson in the 1964 general election and instead supported Republican Barry Goldwater. (2) Davis spent his entire United States Navy service (1941–1946) at Pearl Harbor, Hawaii. |
Jackson Beauregard Davis Sr. (March 27, 1918 – August 22, 2016) was an American lawyer and politician based in Shreveport, Louisiana, who served as a Democrat in the Louisiana State Senate from 1956 to 1980.[1]