William Inglis Clark FRSE (4 June 1855-21 December 1932) was a Scottish pharmaceutical chemist.
He is also remembered as a keen amateur mountaineer.
Clark invented a neutral encapsulation of foul-tasting medicines.
As a chemist and keen amateur photographer he also invented an early colour photographic process in 1909, his subject matter usually stemming from his love of mountains.
His early colour photographs appeared from 1909 in the Scottish Mountaineering Club Journal.