John Henry Douglas (June 22, 1851 – December 12, 1930) was a farmer and politician in Ontario, Canada.
He represented Northumberland East in the Legislative Assembly of Ontario from 1898 to 1902 as a Liberal.
[1] The son of Donald Douglas and Elizabeth Waters, he was born in Warkworth, Canada West.
His election in 1898 was declared void but he was reelected in a by-election held in December later that same year.
This article about an Ontario Liberal Party MPP is a stub.