John Urquhart Jr. (1844 – December 17, 1933) was a Canadian politician, druggist, and physician.

[2] His father was John Urquhart, a Scottish immigrant to Canada, by way of New York, who was a surgeon and apothecary.

[2] The family lived in a combined house a business called Medical Hall in Oakville, Canada West.

[3] At age sixteen, Urquhart ran away from home and worked as a sailor aboard Great Lakes ships.

[1] After his father's death, Urquhart took over the operation of Medical Hall.