ISO 3166-2:SN is the entry for Senegal in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.

Currently for Senegal, ISO 3166-2 codes are defined for 14 regions.

Each code consists of two parts, separated by a hyphen. The first part is SN, the ISO 3166-1 alpha-2 code of Senegal. The second part is two letters.

Subdivision names are listed as in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA).

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The following changes to the entry have been announced in newsletters by the ISO 3166/MA since the first publication of ISO 3166-2 in 1998:

• Subdivisions of Senegal
• FIPS region codes of Senegal
• Neighbouring countries: GM, GN, GW, ML, MR

• ISO Online Browsing Platform: SN
• Regions of Senegal, Statoids.com