Iodine was discovered by: A) S. Jennant B) C. Monasder C) H. Devy D) B. Courtois Detail Iodine was discovered by the French chemist Barnard Courtois in 1811. Related MCQs: Iodine deficiency in human food comes from? Deficiency of Iodine causes? The Great Granary of the Indus valley civilization has been discovered at ..? The great bath of the Indus valley civilization was discovered in ..?