# Bodensee S-Bahn

Bodensee S-Bahn is an international marketing effort grouping various regional rail services (S-Bahn, R/RB, RE, RE/REX) around Lake Constance (German: Bodensee) in Austria, Germany and Switzerland. Cross-border rail and bus services along with Lake Constance ferries (Friedrichshafen–Romanshorn, Konstanz–Meersburg) can be used with the Bodensee Ticket.

## Services

With a few exceptions, most services marketed as part of the Bodensee S-Bahn belong to other S-Bahn networks. Services use the railway lines of the Lake Constance Belt Railway (Bodenseegürtelbahn) and connecting lines.
As of April 2024, the following services are part of Bodensee S-Bahn (railway stations in bold are included in the Bodensee-S-Bahn network, others are not):
| # | Route | Network | Operator |
| S1 | Lindau-Insel – Bregenz – Dornbirn – Feldkirch – Bludenz | Vorarlberg S-Bahn | ÖBB |
| S1 | Schaffhausen – Stein am Rhein – Kreuzlingen – Romanshorn – St. Gallen – Gossau – Flawil – Uzwil – Wil | St. Gallen S-Bahn | THURBO |
| S2 | Nesslau-Neu St. Johann – Wattwil – Herisau – St. Gallen – Rorschach – Altstätten SG | St. Gallen S-Bahn | THURBO |
| S3 | Bregenz – St. Margrethen | Vorarlberg S-Bahn | ÖBB |
| S4 | Sargans – Buchs SG – Altstätten SG – St. Gallen – Herisau – Wattwil – Uznach – Rapperswil | St. Gallen S-Bahn | SOB |
| S5 | Weinfelden – Gossau – St. Gallen – Rorschach – St. Margrethen | St. Gallen S-Bahn | THURBO |
| S6 | Konstanz – Radolfzell – Singen (Hohentwiel) – Engen | — | SBB GmbH |
| S7/REX7 | (Weinfelden – ) Romanshorn – Rorschach ( – Bregenz – Lindau-Reutin) | St. Gallen S-Bahn | THURBO |
| S10 | Wil – Weinfelden – Romanshorn | St. Gallen S-Bahn | THURBO |
| S14 | Weinfelden – Kreuzlingen – Konstanz | St. Gallen S-Bahn | THURBO |
| S21 | Appenzell – Gais – Bühler – Teufen AR – St. Gallen – Speicher – Trogen | St. Gallen S-Bahn | AB |
| S23 | Gossau – Herisau – Urnäsch – Appenzell – Wasserauen | St. Gallen S-Bahn | AB |
| S24 | Altstätten Stadt – Gais | St. Gallen S-Bahn | AB |
| S25 | Rorschach Hafen – Rorschach – Heiden | St. Gallen S-Bahn | AB |
| S26 | Rheineck – Walzenhausen | St. Gallen S-Bahn | AB |
| S44 | Weinfelden – Kreuzlingen – Konstanz | St. Gallen S-Bahn | THURBO |
| S 61 | Radolfzell – Stockach | — | SWEG |
| S62 | Schaffhausen – Singen (Hohentwiel) | Schaffhausen S-Bahn | SBB GmbH |
| R5 | (St. Margrethen – ) Lustenau – Dornbirn – Feldkirch | Vorarlberg S-Bahn | ÖBB |
| RE1 | Herisau – St. Gallen – Romanshorn – Kreuzlingen Hafen – Konstanz | — | THURBO |
| RE 7 | Lindau-Reutin – Hergatz – Immenstadt – Kempten Hbf – Buchloe – Augsburg Hbf ( – Nürnberg Hbf) | — | DB Regio Bayern |
| RB 31 | Friedrichshafen Stadt – Überlingen – Radolfzell | — | DB Regio Baden-Württemberg |
| RB 53 | Aulendorf – Bad Waldsee – Kißlegg – Leutkirch/Wangen | — | DB Regio Baden-Württemberg |
| RE 70 | Lindau-Reutin – Hergatz – Immenstadt – Kempten – Buchloe – München Hbf | — | DB Regio Bayern |
| RB 91 | Friedrichshafen Hafen – Friedrichshafen Stadt – Aulendorf | — | BOB |
| RB 92 | Memmingen – Kißlegg – Wangen – Hergatz – Lindau-Insel | — | Arverio |
| RB 93 | Friedrichshafen Stadt – Lindau-Insel | — | DB Regio Baden-Württemberg |
| RE 96 | Lindau-Reutin – Lindau-Insel – Kißlegg – Memmingen – Buchloe – München Hbf | — | Arverio |