The Orange Belt Railway was a 3 ft narrow gauge railroad established in 1885 by Russian exile Peter Demens in Florida. It was one of the longest narrow gauge railroads in the United States at the time of its completion in 1888, with a mainline 152 miles (245 km) in length between Sanford and St. Petersburg. It carried citrus, vegetables, and passengers; and it interchanged with two standard gauge lines: the Jacksonville, Tampa and Key West Railway at Lake Monroe, and the Florida Central and Peninsular Railroad at Lacoochee.

The Plant System, named after its owner, Henry B. Plant, was a system of railroads and steamboats in the U.S. South, taken over by the Atlantic Coast Line Railroad in 1902. The original line of the system was the Savannah, Florida and Western Railway, running across southern Georgia. The Plant Investment Company was formed in 1882 to lease and buy other railroads and expand the system. Other major lines incorporated into the system include the Savannah and Charleston Railroad and the Brunswick and Western Railroad.