ISO 3166-1 alpha-2 (two-letter country code) format for SAS

Here is the widely-used ISO 3166-1 alpha-2 format for use in SAS. It is commonly called the two-letter country code format.

The PROC FORMAT code generates a character format, so where the raw data contains a code, such as US, it expands it to the pretty name, such as United States. As with any SAS format, applying the format does not change the underlying data.

proc format;
 /* ISO 3166-1 alpha-2 two letter country codes */
 value $ iso3166alphatwo
  'AF' = 'Afghanistan'
  'AX' = 'Åland Islands'
  'AL' = 'Albania'
  'DZ' = 'Algeria'
  'AS' = 'American Samoa'
  'AD' = 'Andorra'
  'AO' = 'Angola'
  'AI' = 'Anguilla'
  'AQ' = 'Antarctica'
  'AG' = 'Antigua and Barbuda'
  'AR' = 'Argentina'
  'AM' = 'Armenia'
  'AW' = 'Aruba'
  'AU' = 'Australia'
  'AT' = 'Austria'
  'AZ' = 'Azerbaijan'
  'BS' = 'Bahamas'
  'BH' = 'Bahrain'
  'BD' = 'Bangladesh'
  'BB' = 'Barbados'
  'BY' = 'Belarus'
  'BE' = 'Belgium'
  'BZ' = 'Belize'
  'BJ' = 'Benin'
  'BM' = 'Bermuda'
  'BT' = 'Bhutan'
  'BO' = 'Bolivia, Plurinational State of'
  'BQ' = 'Bonaire, Sint Eustatius and Saba'
  'BA' = 'Bosnia and Herzegovina'
  'BW' = 'Botswana'
  'BV' = 'Bouvet Island'
  'BR' = 'Brazil'
  'IO' = 'British Indian Ocean Territory'
  'BN' = 'Brunei Darussalam'
  'BG' = 'Bulgaria'
  'BF' = 'Burkina Faso'
  'BI' = 'Burundi'
  'KH' = 'Cambodia'
  'CM' = 'Cameroon'
  'CA' = 'Canada'
  'CV' = 'Cape Verde'
  'KY' = 'Cayman Islands'
  'CF' = 'Central African Republic'
  'TD' = 'Chad'
  'CL' = 'Chile'
  'CN' = 'China'
  'CX' = 'Christmas Island'
  'CC' = 'Cocos (Keeling) Islands'
  'CO' = 'Colombia'
  'KM' = 'Comoros'
  'CG' = 'Congo'
  'CD' = 'Congo, the Democratic Republic of the'
  'CK' = 'Cook Islands'
  'CR' = 'Costa Rica'
  'CI' = 'Côte d''Ivoire'
  'HR' = 'Croatia'
  'CU' = 'Cuba'
  'CW' = 'Curaçao'
  'CY' = 'Cyprus'
  'CZ' = 'Czech Republic'
  'DK' = 'Denmark'
  'DJ' = 'Djibouti'
  'DM' = 'Dominica'
  'DO' = 'Dominican Republic'
  'EC' = 'Ecuador'
  'EG' = 'Egypt'
  'SV' = 'El Salvador'
  'GQ' = 'Equatorial Guinea'
  'ER' = 'Eritrea'
  'EE' = 'Estonia'
  'ET' = 'Ethiopia'
  'FK' = 'Falkland Islands (Malvinas)'
  'FO' = 'Faroe Islands'
  'FJ' = 'Fiji'
  'FI' = 'Finland'
  'FR' = 'France'
  'GF' = 'French Guiana'
  'PF' = 'French Polynesia'
  'TF' = 'French Southern Territories'
  'GA' = 'Gabon'
  'GM' = 'Gambia'
  'GE' = 'Georgia'
  'DE' = 'Germany'
  'GH' = 'Ghana'
  'GI' = 'Gibraltar'
  'GR' = 'Greece'
  'GL' = 'Greenland'
  'GD' = 'Grenada'
  'GP' = 'Guadeloupe'
  'GU' = 'Guam'
  'GT' = 'Guatemala'
  'GG' = 'Guernsey'
  'GN' = 'Guinea'
  'GW' = 'Guinea-Bissau'
  'GY' = 'Guyana'
  'HT' = 'Haiti'
  'HM' = 'Heard Island and McDonald Mcdonald Islands'
  'VA' = 'Holy See (Vatican City State)'
  'HN' = 'Honduras'
  'HK' = 'Hong Kong'
  'HU' = 'Hungary'
  'IS' = 'Iceland'
  'IN' = 'India'
  'ID' = 'Indonesia'
  'IR' = 'Iran, Islamic Republic of'
  'IQ' = 'Iraq'
  'IE' = 'Ireland'
  'IM' = 'Isle of Man'
  'IL' = 'Israel'
  'IT' = 'Italy'
  'JM' = 'Jamaica'
  'JP' = 'Japan'
  'JE' = 'Jersey'
  'JO' = 'Jordan'
  'KZ' = 'Kazakhstan'
  'KE' = 'Kenya'
  'KI' = 'Kiribati'
  'KP' = 'Korea, Democratic People''s Republic of'
  'KR' = 'Korea, Republic of'
  'KW' = 'Kuwait'
  'KG' = 'Kyrgyzstan'
  'LA' = 'Lao People''s Democratic Republic'
  'LV' = 'Latvia'
  'LB' = 'Lebanon'
  'LS' = 'Lesotho'
  'LR' = 'Liberia'
  'LY' = 'Libya'
  'LI' = 'Liechtenstein'
  'LT' = 'Lithuania'
  'LU' = 'Luxemourg'
  'MO' = 'Macao'
  'MK' = 'Macedonia, the Former Yugoslav Republic of'
  'MG' = 'Madagascar'
  'MW' = 'Malawi'
  'MY' = 'Malaysia'
  'MV' = 'Maldives'
  'ML' = 'Mali'
  'MT' = 'Malta'
  'MH' = 'Marshall Islands'
  'MQ' = 'Martinique'
  'MR' = 'Mauritania'
  'MU' = 'Mauritius'
  'YT' = 'Mayotte'
  'MX' = 'Mexico'
  'FM' = 'Micronesia, Federated States of'
  'MD' = 'Moldova, Republic of'
  'MC' = 'Monaco'
  'MN' = 'Mongolia'
  'ME' = 'Montenegro'
  'MS' = 'Montserrat'
  'MA' = 'Morocco'
  'MZ' = 'Mozambique'
  'MM' = 'Myanmar'
  'NA' = 'Namibia'
  'NR' = 'Nauru'
  'NP' = 'Nepal'
  'NL' = 'Netherlands'
  'NC' = 'New Caledonia'
  'NZ' = 'New Zealand'
  'NI' = 'Nicaragua'
  'NE' = 'Niger'
  'NG' = 'Nigeria'
  'NU' = 'Niue'
  'NF' = 'Norfolk Island'
  'MP' = 'Northern Mariana Islands'
  'NO' = 'Norway'
  'OM' = 'Oman'
  'PK' = 'Pakistan'
  'PW' = 'Palau'
  'PS' = 'Palestine, State of'
  'PA' = 'Panama'
  'PG' = 'Papua New Guinea'
  'PY' = 'Paraguay'
  'PE' = 'Peru'
  'PH' = 'Philippines'
  'PN' = 'Pitcairn'
  'PL' = 'Poland'
  'PT' = 'Portugal'
  'PR' = 'Puerto Rico'
  'QA' = 'Qatar'
  'RE' = 'Réunion'
  'RO' = 'Romania'
  'RU' = 'Russian Federation'
  'RW' = 'Rwanda'
  'BL' = 'Saint Barthélemy'
  'SH' = 'Saint Helena, Ascension and Tristan da Cunha'
  'KN' = 'Saint Kitts and Nevis'
  'LC' = 'Saint Lucia'
  'MF' = 'Saint Martin (French part)'
  'PM' = 'Saint Pierre and Miquelon'
  'VC' = 'Saint Vincent and the Grenadines'
  'WS' = 'Samoa'
  'SM' = 'San Marino'
  'ST' = 'Sao Tome and Principe'
  'SA' = 'Saudi Arabia'
  'SN' = 'Senegal'
  'RS' = 'Serbia'
  'SC' = 'Seychelles'
  'SL' = 'Sierra Leone'
  'SG' = 'Singapore'
  'SX' = 'Sint Maarten (Dutch part)'
  'SK' = 'Slovakia'
  'SI' = 'Slovenia'
  'SB' = 'Solomon Islands'
  'SO' = 'Somalia'
  'ZA' = 'South Africa'
  'GS' = 'South Georgia and the South Sandwich Islands'
  'SS' = 'South Sudan'
  'ES' = 'Spain'
  'LK' = 'Sri Lanka'
  'SD' = 'Sudan'
  'SR' = 'Suriname'
  'SJ' = 'Svalbard and Jan Mayen'
  'SZ' = 'Swaziland'
  'SE' = 'Sweden'
  'CH' = 'Switzerland'
  'SY' = 'Syryan Arab Republic'
  'TW' = 'Taiwan, Province of China'
  'TJ' = 'Tajikistan'
  'TZ' = 'Tanzania, United Republic of'
  'TH' = 'Thailand'
  'TL' = 'Timor-Leste'
  'TG' = 'Togo'
  'TK' = 'Tokelau'
  'TO' = 'Tonga'
  'TT' = 'Trinidad and Tobago'
  'TN' = 'Tunisia'
  'TR' = 'Turkey'
  'TM' = 'Turkmenistan'
  'TC' = 'Turks and Caicos Islands'
  'TV' = 'Tuvalu'
  'UG' = 'Uganda'
  'UA' = 'Ukraine'
  'AE' = 'United Arab Emirates'
  'GB' = 'United Kingdom'
  'US' = 'United States'
  'UM' = 'United States Minor Outlying Islands'
  'UY' = 'Uruguay'
  'UZ' = 'Uzbekistan'
  'VU' = 'Vanuatu'
  'VE' = 'Venezuela, Bolivarian Republic of'
  'VN' = 'Vietnam'
  'VG' = 'Virgin Islands, British'
  'VI' = 'Virgin Islands, U.S.'
  'WF' = 'Wallis and Futuna'
  'EH' = 'Western Sahara'
  'YE' = 'Yemen'
  'ZM' = 'Zambia'
  'ZW' = 'Zimbabwe'
;
quit;

/* Example usage */
data country;
 format country_code $iso3166alphatwo.;

 country_code = 'US';
 output;
 country_code='GB';
 output;
run;

proc print data=country;
run;

This list is from Cloudflare published 2015.

Tested with SAS 9.4M3 on Microsoft Windows.