Henry George Leader (March 10, 1880 – May 9, 1946) was a politician, farmer, and cattle breeder from Manitoba, Canada.
He then volunteered for service with the Canadian Army during World War I.
After the war, he was elected to the House of Commons of Canada as a Progressive MP representing Portage la Prairie, Manitoba in the 1921 federal election, having defeated Prime Minister Arthur Meighen by almost 200 votes.
Leader returned to parliament as a Liberal MP in the 1935 federal election.
For the rest of his political service, he sat as a backbencher supporting Prime Minister William Lyon Mackenzie King's government.