Stevenson Macadam FRSE FIC FCS FRSSA (27 April 1829 – 24 January 1901) was a Scottish scientist, analytical chemist, lecturer, and academic author. He was a founding member of the Institute of Chemistry of Great Britain (now the Royal Society of Chemistry) and a founding member of the Society of Chemical Industry. He was also a President of the Royal Scottish Society of the Arts. He was a prominent lecturer in chemistry at institutions in Edinburgh, including Edinburgh University and the Royal College of Surgeons of Edinburgh and the Edinburgh veterinary colleges. He also had a large analytical chemical consulting practise.