| Thomas Alonzo Clark | |
| Office: | Senior Judge of the United States Court of Appeals for the Eleventh Circuit |
| Term Start: | August 31, 1991 |
| Term End: | September 4, 2005 |
| Office1: | Judge of the United States Court of Appeals for the Eleventh Circuit |
| Term Start1: | October 1, 1981 |
| Term End1: | August 31, 1991 |
| Appointer1: | operation of law |
| Predecessor1: | Seat established |
| Successor1: | Susan H. Black |
| Office2: | Judge of the United States Court of Appeals for the Fifth Circuit |
| Term Start2: | November 2, 1979 |
| Term End2: | October 1, 1981 |
| Appointer2: | Jimmy Carter |
| Predecessor2: | Seat established by 92 Stat. 1629 |
| Successor2: | Seat abolished |
| Birth Name: | Thomas Alonzo Clark |
| Birth Date: | 20 December 1920 |
| Birth Place: | Atlanta, Georgia |
| Death Place: | Vero Beach, Florida |
| Education: | Washington and Lee University (BS) University of Georgia School of Law (LLB) |
Thomas Alonzo Clark (December 20, 1920 – September 4, 2005) was a United States circuit judge of the United States Court of Appeals for the Fifth Circuit and later the United States Court of Appeals for the Eleventh Circuit.
Born on December 20, 1920, in Atlanta, Georgia, Clark received a Bachelor of Science degree from Washington and Lee University in 1942 and was in the United States Naval Reserve during World War II, from 1942 to 1946. He received a Bachelor of Laws from the University of Georgia School of Law in 1949, and was in private practice in Bainbridge, Georgia from 1949 to 1955, in Americus, Georgia from 1955 to 1957, and in Tampa, Florida, from 1957 to 1979. He was also an instructor at Georgia Southwestern College from 1956 to 1957.
On August 28, 1979, Clark was nominated by President Jimmy Carter to a new seat on the United States Court of Appeals for the Fifth Circuit created by 92 Stat. 1629. He was confirmed by the United States Senate on October 31, 1979, and received his commission on November 2, 1979. On October 1, 1981, Clark was reassigned by operation of law to the United States Court of Appeals for the Eleventh Circuit. He assumed senior status on August 31, 1991, serving in that capacity until his death on September 4, 2005, in Vero Beach, Florida, from complications of Alzheimer's disease.[1]