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 Edinburgh University.
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 1923-1929.
He was knighted in 1917.
| Parliament of the United Kingdom | ||
|---|---|---|
| Preceded by St John Brodrick |
Member of Parliament for Guildford 1906–January 1910 |
Succeeded by Edgar Horne |
| Preceded by James Murray |
Member of Parliament for Aberdeenshire Eastern January 1910–1918 |
Constituency abolished |
| New constituency | Member of Parliament for Aberdeen and Kincardine East 1918–1922 |
Succeeded by Frederick Martin |
| Preceded by Sir Newton Moore |
Member of Parliament for Islington North 1923–1929 |
Succeeded by Robert Stanley Young |