The Fort Smith Railroad is a Class III short-line railroad headquartered in Fort Smith, Arkansas.
FSR operates an line in Arkansas from Fort Smith (where it interchanges with Kansas City Southern Railway, Union Pacific Railroad, and Arkansas and Missouri Railroad) to Fort Chaffee.
FSR traffic generally consists of grain, food products, paper products, scrap and finished steel, lumber, peanuts, alcohol, military equipment, and charcoal.
The FSR currently operates with three ex-Santa Fe Railroad EMD GP20 locomotives.
The original line, consisting of to Paris, Arkansas, was built in the 1890s by a Union Pacific predecessor, and was leased to FSR in 1991. The portion between Fort Chaffee and Paris was abandoned in 1995. FSR is a subsidiary of Pioneer Railcorp.