Railroads (>1,000,000) (1)
| BNSF Railway |
| BNSF Railway (Inactive) |
| Union Pacific |
| Montana Rail Link |
| Montana Rail Link (Inactive) |
| Dakota, Missouri Valley and Western Railroad |
| Butte, Anaconda & Pacific Railway |
| Central Montana Rail, Inc. |
| Central Montana Rail, Inc. (Inactive) |
| Mission Mountain Railroad |
| Port of Montana |
| Global Rail Group |
| Transco Railway Products, Inc. |
| Alder Gulch Short Line Railway |
| Lincoln County Port Authority |
Railroads (<1,000,000) (2)
|
| BNSF Railway |
| BNSF Railway (Inactive) |
|
| Union Pacific |
|
| Montana Rail Link |
| Montana Rail Link (Inactive) |
|
| Dakota, Missouri Valley and Western Railroad |
|
| Butte, Anaconda & Pacific Railway |
|
| Central Montana Rail, Inc. |
| Central Montana Rail, Inc. (Inactive) |
|
| Mission Mountain Railroad |
|
| Port of Montana |
|
| Global Rail Group |
|
| Transco Railway Products, Inc. |
|
| Alder Gulch Short Line Railway |
|
| Lincoln County Port Authority |
|