Known railroads and their operations for Wyoming are listed here. Subdivisions that cross state lines will only contain information and GPS ranges to approximately the state line to prevent unnecessary overlap

Due to operational changes, mergers and general changes, some railroad radio channels may be reused by the same or adjacent railroads. However, if using RadioReference aware scanners or software, you can reduce seeing or duplicating this information by scanning just the subdivisions or locations that you are interested in

Railroads are listed by size starting with the largest and ending with historical/tourist operations and in alphabetical order

Passenger trains can be heard on the respective railroad they are operating on unless passenger stations or yards have specific radio assignments. Those frequencies will be listed under the proper passenger railroad category

Short alpha names are comprised of the railroads AAR reporting mark, AAR channel number and subdivision or major use function. The description field will contain actual use or location information to provide the best possible information for various scanners, users and readability

When a "Road" and "Dispatcher" channel are both listed, both should be monitored for complete communications. The road channel is typically used by crews traveling along the railroad, switching, verbal defect detectors and similar operations. Crews will typically need to go to the "dispatcher" channel to receive track warrants, track authority or other information that may be required to start or continue the trip