Belgium (NMBS/SNCB)
- InterCity (IC)
- A train connecting Belgium's major cities. These trains stop at the most important stations only, sometimes crossing national borders as well.
- InterRegio (IR)
- A train connecting Belgium's major cities with smaller cities. These trains generally skip smaller stations. Comparable to German Regional-Express
- Piekuurtrein/rush-hour train (P)
- Additional scheduled train service that is limited to times at which the demand for a certain route is at its highest. The number of stops varies between trains.
- Lokale trein/local train (L)
- Local trains usually connect larger cities, but will stop at (nearly) every station along the way. Similar to German Regionalbahn
- CityRail (CR)
- Suburban train connecting towns and cities around Brussels. Stops at (nearly) every station.
- Tourist train (ICT)
- Additional scheduled train service that is limited to times at which the demand for a certain touristic destination is at its highest. The number of stops varies between trains.
- Extra train
- Additional train service, used in case of exceptionally good weather to accommodate more passengers on routes to the coast or in case of special events such as concerts.
- Eurocity (EC)
- International train meeting certain quality criteria.
- International train (INT)
- Regular international train.
- Fyra
- High-speed trains to The Netherlands. (operated by NS)
- Thalys (THA)
- High-speed trains to Germany, France and The Netherlands. (operated by SNCF, DB, NS and NMBS)
- TGV
- High-speed trains to France. (Operated by SNCF)
- ICE
- High-speed trains to Germany. (Operated by DB)
- Eurostar (EST)
- High-speed trains to France and the UK. (operated by SNCF, NMBS and Eurostar UK Ltd.)
Read more about this topic: Train Categories In Europe