John Buddle Blyth (1814 – 24 December 1871) was a Jamaican-born chemist who was the first professor of chemistry at Queen's College Cork in Ireland.

[4] He was baptised at Mesopotamia in Westmoreland Parish on 11 April 1816 by Edmund Pope, rector of Westmorland, and described as a "free child of colour".

[5] He received his MD from the University of Edinburgh in 1839 for a thesis titled "The Dependence of the Animal and Organic Functions on Nervous Influence; and the Identity of the Latter with Electricity".

[4] In the 1840s, Blyth and the German chemist August Wilhelm von Hofmann were the first to report photopolymerisation when they observed that styrene became metastyrol when exposed to sunlight but remained unchanged in the dark.

These included the second volume of the seventh edition of von Liebig's work on agricultural chemistry which was published in New York in 1863 as The Natural Laws of Husbandry.