Boston and Maine Corporation
（重定向自Boston and Maine Railroad）
The Boston and Maine Corporation (reporting markBM), known as the Boston and Maine Railroad (B&M), was a former U.S. Class I railroad in northern New England. It became part of what is now the Pan Am Railways network in 1983.
At the end of 1970 B&M operated 1,515 route-miles (2,438 km) on 2,481 miles (3,993 km) of track, not including Springfield Terminal. That year it reported 2744 million ton-miles of revenue freight and 92 million passenger-miles.