| Adrian Joseph Caillouet | |
| Office: | Judge of the United States District Court for the Eastern District of Louisiana |
| Term Start: | April 23, 1940 |
| Term End: | December 19, 1946 |
| Appointer: | Franklin D. Roosevelt |
| Predecessor: | Seat established by 52 Stat. 110 |
| Successor: | Herbert William Christenberry |
| Birth Name: | Adrian Joseph Caillouet |
| Birth Date: | 19 February 1883 |
| Birth Place: | Thibodaux, Louisiana |
| Education: | St. Mary's College (A.B.) read law |
Adrian Joseph Caillouet (February 19, 1883 – December 19, 1946) was a United States district judge of the United States District Court for the Eastern District of Louisiana.
Born in Thibodaux, Louisiana, Caillouet received an Artium Baccalaureus degree from St. Mary's College in Kentucky in 1902 and read law in 1913. He was in private practice in Houma, Louisiana from 1913 to 1940.
On April 2, 1940, Caillouet was nominated by President Franklin D. Roosevelt to a new seat on the United States District Court for the Eastern District of Louisiana created by 52 Stat. 110. He was confirmed by the United States Senate on April 9, 1940, and received his commission on April 23, 1940, serving until his death on December 19, 1946.