Thomas Todd (January 23, 1765 – February 7, 1826) was an Associate Justice of the Supreme Court of the United States from 1807 to 1826.

Raised in the Colony of Virginia, he studied law and later participated in the founding of Kentucky, where he served as a clerk, judge, and justice.

Todd joined the U.S. Supreme Court in 1807 and his handful of legal opinions there mostly concerned land claims.

[3] At the age of 16, Todd joined the Continental Army as a private with a cavalry company from Manchester, Virginia in the final months of the American Revolutionary War.

After only six months of battle, he returned home and enrolled in Liberty Hall Academy (now Washington and Lee University) in Lexington, Virginia, graduating in 1783.

[1] Todd then became a tutor at Liberty Hall Academy (which later became Washington & Lee University) in exchange for room and board, and graduated at age 18, in 1783.

He also gained influence by becoming its court reporter and served as secretary to the Kentucky State Legislature after statehood.

[1] Although they had different political beliefs, Todd adopted Marshall's views on judicial interpretation, but did not write a single constitutional opinion.

His opinion in Watts v. Lindsey's Heirs et al., explained confusing and complicated land title problems which plagued early settlers of Kentucky.

In Riggs v. Taylor, the court made the important procedural ruling, now taken for granted, that if a party intends to use a document as evidence, then the original must be produced.

After his children were provided for, as he put it, in "their full proportion", the remainder of his estate valued at more than $70,000—a large sum at the time.