The Midland Railway of Canada was a historical Canadian railway which ran from Port Hope, Ontario to Midland on Georgian Bay. The line was originally intended to run to Peterborough, but the competing Cobourg and Peterborough Railway was completed in 1854 and the owner's plans changed. Redirecting the line northward, it opened as the Port Hope, Lindsay & Beaverton Railway, a much longer line than originally planned. A further expansion launched in 1869 pushed the line westward towards Georgian Bay, and prompted renaming as the Midland Railway.