John Young Buchanan FRSE FRS FCS (20 February 1844 – 16 October 1925) was a Scottish chemist, oceanographer and Arctic explorer.
He was born in Partickhill, Glasgow on 20 February 1844, the son of Jane Young and her husband, John Buchanan of Dowanhill, a relatively affluent landowner.
He also spent time in Europe studying at the universities of Marburg, Leipzig, Bonn and Paris.
In 1870 he was elected a Fellow of the Royal Society of Edinburgh, his proposer being Alexander Crum Brown.
His body was returned to Edinburgh and he is buried in Lord's Row with his parents, against the west wall of Dean Cemetery.