John Silas Poole (June 25, 1872 in Kemptville, Ontario – December 29, 1963) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba from 1936 to 1949. Initially as a Conservative, he became a Progressive Conservative in 1943 when the party changed its name.

Biography

The son of William Poole and Isabella Cranstoun, Poole was educated at Kemptville and in Winnipeg, Manitoba. He worked as a physician, and was president of the Manitoba Medical Association and College of Physicians and Surgeons. Poole also served on the Dominion Medical Council. In 1905, he married Mary Elizabeth McFadden.

Poole first sought election to the Manitoba election in the 1932 provincial election, but lost to Progressive incumbent Adalbert Poole in the constituency of Beautiful Plains.