S40 (ZVV)

{{short description|Railway service in Switzerland}}

{{Use dmy dates|date=August 2024}}

{{Infobox rail line

| box_width =

| name =S40 (ZVV)

| color ={{rcr|Zürich S-Bahn|40}}

| logo =

| logo_width =

| logo_alt =

| image =Rapperswil - Obersee - Seedamm IMG 3848.jpg

| image_width =300px

| image_alt =SOB Flirt of the S40 line crossing the Seedamm at Rapperswil; Holzbrücke Rapperswil-Hurden in the foreground.

| caption =SOB Flirt of the S40 line crossing the Seedamm at Rapperswil; Holzbrücke Rapperswil-Hurden in the foreground.

| type =S-Bahn

| system =Zürich S-Bahn

| status =Operational

| locale =Zürich, Switzerland

| start =Einsiedeln

| end =Rapperswil

| stations =12

| routes =

| daily_ridership =

| ridership2 =

| open =

| close =

| owner =

| operator =Zürcher Verkehrsverbund (ZVV)

| character =

| depot =

| stock =Südostbahn
rolling stock

| linelength_km =

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| gauge = {{RailGauge|sg}}

| old_gauge =

| load_gauge =

| minradius =

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| electrification =

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| website = [https://web.archive.org/web/20090419063432/http://www.zvv.ch/en/ ZVV] {{in lang|en}}

| map = {{S40 (ZVV)}}

| map_state = hide

}}

File:S-Bahn-Zuerich-Linienplan ab Ende 2018.svg network as of December 2018{{cite web |url=https://www.zvv.ch/content/dam/zvv/fahrplan/pdf/sbahn.pdf |title=S-Bahnen, Busse und Schiffe S-Bahn trains, buses and boats |url-status=live |archive-date=2023-07-26 |archive-url=https://web.archive.org/web/20230726152450/https://www.zvv.ch/zvv-assets/fahrplan/pdf/sbahn.pdf |access-date=2023-07-26}}]]

The S40 is a regional railway line of the S-Bahn Zürich on the Zürcher Verkehrsverbund (ZVV), Zürich transportation network, in the cantons of Schwyz, St. Gallen and Zürich.