The Prince Edward Island Railway (PEIR) was a historic Canadian railway in Prince Edward Island (PEI). The railway ran tip-to-tip on the island, from Tignish in the west to Elmira in the east, with major spurs serving Borden-Carleton's train ferry dock, the capital in Charlottetown, Montague and Georgetown and the original eastern terminus at Souris. A major spur from Charlottetown served Murray Harbour on the south coast.