The Detroit, Monroe and Toledo Railroad (DM&T) was a shortline railroad which operated in the U.S. states of Michigan and Ohio. Opened in 1856, its main line ran from Detroit, Michigan, to Toledo, Ohio. The railroad leased itself to the Michigan Southern and Northern Indiana Railroad (MS&NI) in 1856. A 1914 merger which created the New York Central Railroad led to the DM&T's consolidation into the new road, ending its existence.