Thomas Clayton (1 December 1882 – 24 March 1909) was an Australian jockey of the early 20th century.

[3] He was indentured to famous Randwick trainer Isaac Earnshaw and rode for him some of the best horses of the time.

He was best known for his association with the champion Poseidon and accumulated an impressive record of major wins with this horse.

At 26 years of age, Clayton sustained a compound fracture of the pelvis, broken ribs and internal injuries when his mount "All Blue" was one of twelve horses to fall during the running of the Trial Stakes at Rosehill on 20 March 1909.

[5] On 24 March 2004 the presentation whips Clayton was given for his Melbourne Cup wins on Acrasia and Poseidon were sold at Public Auction in Victoria.