John Collis Nesbit (12 July 1818 – 30 March 1862) was an English agricultural chemist.
Nesbit was educated at home and demonstrated an interest in the sciences and studied under John Dalton in Manchester.
Nesbit helped introduce the natural sciences into his father's school in Kennington, in 1841.
Nesbit started a consulting practice that undertook the commercial analysis of superphosphates and other artificial manures for farmers and manufacturers.
Nesbit died at the home of a friend in Barnes, 30 March 1862, and was interred in the catacombs at West Norwood Cemetery.