ISO 3166-1: Standard codes for countries and territories ISO 3166-1 ISO 3166-1 defines short alphanumeric codes for countries and dependent territories used worldwide (alpha-2, alpha-3 and numeric), maintained by the ISO 3166 Maintenance Agency.
List of countries by continent List of countries by continents Overview of how countries are grouped by continent, major classification systems and counting conventions, plus notes on transcontinental states, dependencies and reading guidance.