| Name |
Mark |
System[nb 1] |
From |
To |
Successor |
Notes |
| Big Blackfoot Railway |
|
MILW |
1910 |
1916 |
Chicago, Milwaukee and St. Paul Railway |
| Big Horn Railroad |
|
CB&Q |
1905 |
1916 |
Chicago, Burlington and Quincy Railroad |
| Big Horn Southern Railroad |
|
CB&Q |
1888 |
1897 |
Chicago, Burlington and Quincy Railroad |
| Billings and Central Montana Railway |
|
NP |
1912 |
1921 |
Northern Pacific Railway |
| Billings and Northern Railroad |
|
GN |
1902 |
1907 |
Great Northern Railway |
| Burlington Northern Inc. |
BN |
|
1970 |
1981 |
Burlington Northern Railroad |
| Burlington Northern Railroad |
BN |
|
1981 |
1996 |
Burlington Northern and Santa Fe Railway |
| Butte, Anaconda and Pacific Railway |
BA&P, BAP |
|
1892 |
1985 |
Rarus Railway |
| Butte, Wisdom and Pacific Railway |
|
|
1913 |
1914 |
Southern Montana Railway |
| Camp Creek Railway |
|
NP |
1911 |
1914 |
Northern Pacific Railway |
| Chicago, Burlington and Quincy Railroad |
CB&Q |
CB&Q |
1894 |
1970 |
Burlington Northern Inc. |
| Chicago, Burlington and Quincy Railway |
|
CB&Q |
1901 |
1907 |
N/A |
Leased the Chicago, Burlington and Quincy Railroad |
| Chicago, Milwaukee and Puget Sound Railway |
|
MILW |
1909 |
1912 |
Chicago, Milwaukee and St. Paul Railway |
| Chicago, Milwaukee and St. Paul Railway |
|
MILW |
1912 |
1928 |
Chicago, Milwaukee, St. Paul and Pacific Railroad |
| Chicago, Milwaukee and St. Paul Railway of Montana |
|
MILW |
1905 |
1908 |
Chicago, Milwaukee and St. Paul Railway of Washington |
| Chicago, Milwaukee and St. Paul Railway of Washington |
|
MILW |
1908 |
1909 |
Chicago, Milwaukee and Puget Sound Railway |
| Chicago, Milwaukee, St. Paul and Pacific Railroad |
MILW |
MILW |
1928 |
1982 |
Burlington Northern Railroad |
| Clearwater Short Line Railway |
|
NP |
1898 |
1914 |
Northern Pacific Railway |
| Coeur d'Alene Railway and Navigation Company |
|
NP |
1886 |
1897 |
Northern Pacific Railway |
| Drummond and Philipsburg Railroad |
|
NP |
1887 |
1888 |
Northern Pacific and Montana Railroad |
| Elliston and Southern Railroad |
|
|
1896 |
|
N/A |
| Gallatin Valley Railway |
|
MILW |
1910 |
1918 |
Chicago, Milwaukee and St. Paul Railway |
| Gallatin Valley Electric Railway |
|
MILW |
1908 |
1910 |
Gallatin Valley Railway |
| Gaylord and Ruby Valley Railway |
|
NP |
1897 |
1899 |
Northern Pacific Railway |
| Gilmore and Pittsburgh Railroad |
|
NP |
1907 |
1939 |
N/A |
| Great Falls and Canada Railway |
|
GN |
1889 |
1901 |
Montana and Great Northern Railway |
| Great Falls Terminal Railway |
|
MILW |
1912 |
1914 |
Chicago, Milwaukee and St. Paul Railway |
| Great Falls and Teton County Railway |
|
GN |
1912 |
1914 |
Great Northern Railway |
| Great Northern Railway |
GN |
GN |
1890 |
1970 |
Burlington Northern Inc. |
| Helena, Boulder Valley and Butte Railroad |
|
NP |
1886 |
1888 |
Northern Pacific and Montana Railroad |
| Helena and Jefferson County Railroad |
|
NP |
1883 |
1898 |
Northern Pacific Railway |
| Helena and Northern Railroad |
|
NP |
1886 |
1888 |
Northern Pacific and Montana Railroad |
| Helena and Red Mountain Railroad |
|
NP |
1886 |
1899 |
Northern Pacific Railway |
| Minneapolis, St. Paul and Sault Ste. Marie Railroad |
SOO |
CP |
1944 |
1961 |
Soo Line Railroad |
| Minneapolis, St. Paul and Sault Ste. Marie Railway |
SOO |
CP |
1913 |
1944 |
Minneapolis, St. Paul and Sault Ste. Marie Railroad |
| Missoula and Bitter Root Valley Railroad |
|
NP |
1887 |
1888 |
Northern Pacific and Montana Railroad |
| Missoula and Hamilton Railway |
|
NP |
1911 |
1916 |
Northern Pacific Railway |
| Missouri River Railway |
|
NP |
1906 |
1914 |
Northern Pacific Railway |
| Montana Railroad |
|
MILW |
1894 |
1910 |
Chicago, Milwaukee and Puget Sound Railway |
| Montana Railway |
|
NP |
1881 |
1898 |
Northern Pacific Railway |
| Montana Central Railway |
|
GN |
1886 |
1907 |
Great Northern Railway |
| Montana Eastern Railway |
|
GN |
1912 |
1928 |
Great Northern Railway |
| Montana and Great Northern Railway |
|
GN |
1901 |
1907 |
Great Northern Railway, St. Paul, Minneapolis and Manitoba Railway |
| Montana Southern Railway |
|
|
1917 |
1940 |
N/A |
| Montana Southern Railway |
|
NP |
1893 |
1897 |
Gaylord and Ruby Valley Railway |
| Montana Union Railway |
|
NP |
1886 |
1898 |
Northern Pacific Railway |
| Montana Western Railway |
MWRR |
|
1986 |
2003 |
Burlington Northern and Santa Fe Railway |
| Montana Western Railway |
|
|
1909 |
1970 |
Burlington Northern Inc. |
| Montana, Wyoming and Southern Railroad |
MW&S, MWS |
|
1909 |
1955 |
N/A |
| Northern Pacific Railroad |
|
NP |
1864 |
1896 |
Northern Pacific Railway |
| Northern Pacific Railway |
NP |
NP |
1896 |
1970 |
Burlington Northern Inc. |
| Northern Pacific and Montana Railroad |
|
NP |
1888 |
1898 |
Northern Pacific Railway |
| Oregon Short Line Railroad |
|
UP |
1897 |
1987 |
Union Pacific Railroad |
| Oregon Short Line and Utah Northern Railway |
|
UP |
1889 |
1897 |
Oregon Short Line Railroad |
| Rarus Railway |
RARW |
|
1985 |
2007 |
Butte, Anaconda and Pacific Railway |
| Rocky Fork and Cooke City Railway |
|
NP |
1886 |
1898 |
Northern Pacific Railway |
| Rocky Mountain Railroad of Montana |
|
NP |
1881 |
1898 |
Northern Pacific Railway |
| St. Paul, Minneapolis and Manitoba Railway |
|
GN |
1879 |
1907 |
Great Northern Railway |
| Shields River Valley Railway |
|
NP |
1908 |
1914 |
Northern Pacific Railway |
| Soo Line Railroad |
SOO |
CP |
1961 |
|
|
Still exists in Montana as a lessor of the Dakota, Missouri Valley and Western Railroad |
| Southern Montana Railway |
|
|
1914 |
1917 |
Montana Southern Railway |
| Utah and Northern Railway |
|
UP |
1878 |
1889 |
Oregon Short Line and Utah Northern Railway |
| White Sulphur Springs and Yellowstone Park Railway |
WSYP |
MILW |
1910 |
1980 |
N/A |
| Yellowstone Park Railroad |
|
|
1905 |
1909 |
Montana, Wyoming and Southern Railroad |