The following railroads operate in the U.S. state of Montana.
BNSF Railway (BNSF)
Butte, Anaconda and Pacific Railway (RARW)
Central Montana Rail, Inc. (CM)
Dakota, Missouri Valley and Western Railroad (DMVW)
Mission Mountain Railroad (MMT)
Montana Rail Link (MRL)
Tongue River Railroad (proposed)
Union Pacific Railroad (UP)
Yellowstone Valley Railroad (YSVR)
Montana Limestone Company (MLC)
Signal Peak Energy (SPEX)
Amtrak (AMTK)
Electric
Amador Railway
Anaconda Copper Mining Company (Electric Light and Railway Department)
Bozeman Street Railway
Butte, Anaconda and Pacific Railway (BA&P, BAP)
Butte Consolidated Railway
Butte Electric Railway
Gallatin Light, Power and Railway Company
Gallatin Valley Railway
Gallatin Valley Electric Railway
Great Falls Street Railway
Helena Light and Railway Company
Helena Light and Traction Company
Not completed
Montana Railway
North and South Railway
List of Montana railroads Wikipedia (Text) CC BY-SA