These are data codes for Switzerland.
Country
These are codes for the country itself. See country code for a fuller explanation.
;CH :ISO country code (ISO 3166-1 alpha-2, two letter)
:Internet Country code top-level domain (ccTLD) (see .ch)
:Distinguishing sign of vehicles in international traffic
:International Union of Railways alphabetical UIC Country Code
:WIPO ST.3
;CHE :ISO country code (ISO 3166-1 alpha-3, three letter code) The three NUTS levels are:
- NUTS-1: Switzerland (CH0)
- NUTS-2: 7 Regions
- NUTS-3: 26 Cantons
The seven NUTS-2 regions are the following:
{| class="wikitable sortable"
! Code !! Region !! Region (local name) !! Cantons
|-
| CH01 || Lake Geneva region || Région lémanique || Vaud, Valais, Geneva
|-
| CH02 || Espace Mittelland || Espace Mittelland || Bern, Fribourg, Solothurn, Neuchâtel, Jura
|-
| CH03 || Northwestern Switzerland || Nordwestschweiz || Basel-City, Basel-Country, Aargau
|-
| CH04 || Zurich || Zürich || Zurich
|-
| CH05 || Eastern Switzerland || Ostschweiz || Glarus, Schaffhausen, Appenzell Ausserrhoden, Appenzell Innerrhoden, St. Gallen, Grisons, Thurgau
|-
| CH06 || Central Switzerland || Zentralschweiz || Lucerne, Uri, Schwyz, Obwalden, Nidwalden, Zug
|-
| CH07 || Ticino || Ticino || Ticino
|}
Below the NUTS levels, there are two LAU levels (LAU-1: districts; LAU-2: municipalities).
Cantons
The two-letter abbreviations are widely used, e.g. on car license plates and as disambiguator for localities on postal addresses if two localities in different cantons have the same name. They are also used with the prefix "CH-" as ISO 3166-2 codes of Switzerland, e.g. CH-SZ for the canton of Schwyz.