The following is a list of railway companies which operate routes on Swiss territory.
The following is a complete list of all railway companies which operate routes on Swiss territory. It also includes routes of foreign railway companies (e.g. Deutsche Bahn), but not routes of Swiss companies in neighbouring countries.
Not included are railway companies which do not operate their own routes (e.g. Cisalpino, Hupac or the former Lokoop) as well as operators of short connecting goods lines.
If there is no abbreviation shown, it means that this company always appears with its full name.