William Henry Cowan

Sir William Henry Cowan (22 May 1862 – 11 January 1932) was a politician in the United Kingdom.

The son of William Cowan and Elizabeth Giles, he was educated at Merchiston Castle School, Edinburgh Collegiate School and the University of Edinburgh. He served as Liberal Member of Parliament (MP) for Guildford from 1906–1910 and for Aberdeenshire Eastern from 1910–1922, then as a Unionist for Islington North from 1923–29. As a parliamentarian, Cowan became interested in matters concerning immigration including promoting immigration of British families to dominions such as Australia. As of 1928, he was chairman of Parkinson and W. and B. Cowan, Limited.

He was knighted in the 1917 Birthday Honours.