The Maple Leaf is an international passenger train service operated by Amtrak and Via Rail between New York Penn Station in New York City and Union Station in Toronto via the Empire Corridor. Daily service is offered in both directions; the 544-mile (875 km) trip takes approximately 12 hours, including two hours for U.S. or Canadian customs and immigration inspection at either Niagara Falls, New York, or Niagara Falls, Ontario. Although the train uses Amtrak rolling stock exclusively, the train is operated by Via Rail crews while in Canada and by Amtrak crews in the United States. Service began in 1981.

The Toronto, Hamilton and Buffalo Railway was a railway based in Hamilton that ran in Southern Ontario from 1892 to 1987. It never reached the other two cities in its name although it had branch lines extending to Dunnville and Port Maitland.