John Thomas Watson (November 20, 1885 – October 24, 1954) was an American lawyer and politician who served as the 27th Attorney General of Florida from 1941 to 1949.

Facing a tough competition, including former Governors John W. Martin and Cary A. Hardee, Watson finished last in the Democratic primary out of eight candidates, receiving just 1.42% of the vote.

Watson instituted legal action in order to outlaw closed shops, believing they violated public policy.

[6] In 1954, Watson changed his party affiliation to Republican in order to run for a special election following the death of Governor Dan McCarty.

Watson defeated Charles E. Compton in the Republican primary, and faced State Senator LeRoy Collins, a staunch segregationist, in the general election.