🇸🇲San Marino (officially: Most Serene Republic of San Marino) is filed in ISO 3166-1 under alpha-2 code SM, alpha-3 code SMR and numeric code 674. Its international dialing code is +378 and its country-code top-level domain is .sm. The capital is City of San Marino. Region: Europe.
Currency: EUR (Euro).
The two-letter code appears in domains, locales (like en-SM), shipping and licence plates; the three-letter code in passports, finance and sport; the numeric code where Latin script is unavailable.