| Orma Rinehart Smith | |
| Office: | Senior Judge of the United States District Court for the Northern District of Mississippi |
| Term Start: | August 16, 1978 |
| Term End: | July 5, 1982 |
| Office1: | Judge of the United States District Court for the Northern District of Mississippi |
| Term Start1: | July 25, 1968 |
| Term End1: | August 16, 1978 |
| Appointer1: | Lyndon B. Johnson |
| Predecessor1: | Claude Feemster Clayton |
| Successor1: | Lyonel Thomas Senter Jr. |
| Birth Name: | Orma Rinehart Smith |
| Birth Date: | 4 September 1904 |
| Birth Place: | Booneville, Mississippi |
| Education: | University of Mississippi School of Law (LL.B.) |
Orma Rinehart Smith (September 4, 1904 – July 5, 1982) was a United States district judge of the United States District Court for the Northern District of Mississippi.
Born in Booneville, Mississippi, Smith received a Bachelor of Laws from the University of Mississippi School of Law in 1927. He was in private practice in Corinth, Mississippi from 1928 to 1968.
On July 17, 1968, Smith was nominated by President Lyndon B. Johnson to a seat on the United States District Court for the Northern District of Mississippi vacated by Judge Claude Feemster Clayton. He was confirmed by the United States Senate on July 25, 1968, and received his commission the same day. He assumed senior status on August 16, 1978. Smith served in that capacity until his death on July 5, 1982.