CityNightLine
| Company type | Incorporation | 
|---|---|
| Industry | Rail transport | 
| Founded | 1995 | 
| Defunct | 2016 | 
| Fate | Merged with DB NachtZug | 
| Successor | City Night Line | 
| Headquarters | , | 
| Products | Rail transport (night train) | 
| Website | citynightline.de on archive.org | 
CityNightLine AG (timetable and platform sign abbreviation: CNL) was a Swiss night train service. CNL had right of passage grants in Germany, the Netherlands, Austria, Switzerland and Denmark. It served stations in Belgium, France, Italy and the Czech Republic.