William Bain Scarth
 William Bain Scarth (November 10 1837 – May 15 1902) was a Scottish-born businessman and political figure in Ontario and Manitoba Canada. He represented Winnipeg in the Canadian House of Commons from 1887 to 1891 as a Conservative member.He was born in Aberdeen the son of James Lendrum Scarth and Jane Geddes was educated in Edinburgh and Aberdeen and came to Upper Canada in 1855.