Thomas Stevenson (1838 – 27 July 1908) was an English toxicologist and forensic chemist.

He entered Guy's Hospital Medical School in 1859 and graduated MB, London, in 1863 and M.D.

He is notable as the scientific mentor of the Nobel Prize winner Frederick Hopkins.

Stevenson died of diabetes on 27 July 1908 at his home in Streatham High Road, London and was buried at West Norwood Cemetery.

The British Medical Journal obituary, besides detailing his notable career, noted his Christian faith and service: ‘He was a diligent student of the Bible; indeed, his character and life were the direct result of his constant and abiding faith in God, every act being simply and solely done for His glory.’ References