John Lorn McDougall (1800 – May 17, 1860) was a businessman and political figure in Canada West.
He was born on the Isle of Mull, Scotland in 1800, orphaned at a young age and raised by aunts from his mother's family.
He joined the Hudson's Bay Company in Scotland as a clerk and came to Lower Canada in 1820.
In 1840, he retired from the Hudson's Bay Company, settled in Renfrew and opened a general store there.
His son, also named John Lorn, became Auditor General of Canada in 1878.