- AW: Aruba
- AF: Afghanistan
- AO: Angola
- AI: Anguilla
- AX: Åland Islands
- AL: Albania
- AD: Andorra
- AE: United Arab Emirates
- AR: Argentina
- AM: Armenia
- AS: American Samoa
- AQ: Antarctica
- TF: French Southern Territories
- AG: Antigua and Barbuda
- AU: Australia
- AT: Austria
- AZ: Azerbaijan
- BI: Burundi
- BE: Belgium
- BJ: Benin
- BQ: Bonaire, Sint Eustatius and Saba
- BF: Burkina Faso
- BD: Bangladesh
- BG: Bulgaria
- BH: Bahrain
- BS: Bahamas
- BA: Bosnia and Herzegovina
- BL: Saint Barthélemy
- BY: Belarus
- BZ: Belize
- BM: Bermuda
- BO: Bolivia
- BR: Brazil
- BB: Barbados
- BN: Brunei Darussalam
- BT: Bhutan
- BV: Bouvet Island
- BW: Botswana
- CF: Central African Republic
- CA: Canada
- CC: Cocos (Keeling) Islands
- CH: Switzerland
- CL: Chile
- CN: China
- CI: Côte d'Ivoire
- CM: Cameroon
- CD: Congo, The Democratic Republic of the
- CG: Congo
- CK: Cook Islands
- CO: Colombia
- KM: Comoros
- CV: Cabo Verde
- CR: Costa Rica
- CU: Cuba
- CW: Curaçao
- CX: Christmas Island
- KY: Cayman Islands
- CY: Cyprus
- CZ: Czechia
- DE: Germany
- DJ: Djibouti
- DM: Dominica
- DK: Denmark
- DO: Dominican Republic
- DZ: Algeria
- EC: Ecuador
- EG: Egypt
- ER: Eritrea
- EH: Western Sahara
- ES: Spain
- EE: Estonia
- ET: Ethiopia
- FI: Finland
- FJ: Fiji
- FK: Falkland Islands (Malvinas)
- FR: France
- FO: Faroe Islands
- FM: Micronesia, Federated States of
- GA: Gabon
- GB: United Kingdom
- GE: Georgia
- GG: Guernsey
- GH: Ghana
- GI: Gibraltar
- GN: Guinea
- GP: Guadeloupe
- GM: Gambia
- GW: Guinea-Bissau
- GQ: Equatorial Guinea
- GR: Greece
- GD: Grenada
- GL: Greenland
- GT: Guatemala
- GF: French Guiana
- GU: Guam
- GY: Guyana
- HK: Hong Kong
- HM: Heard Island and McDonald Islands
- HN: Honduras
- HR: Croatia
- HT: Haiti
- HU: Hungary
- ID: Indonesia
- IM: Isle of Man
- IN: India
- IO: British Indian Ocean Territory
- IE: Ireland
- IR: Iran, Islamic Republic of
- IQ: Iraq
- IS: Iceland
- IL: Israel
- IT: Italy
- JM: Jamaica
- JE: Jersey
- JO: Jordan
- JP: Japan
- KZ: Kazakhstan
- KE: Kenya
- KG: Kyrgyzstan
- KH: Cambodia
- KI: Kiribati
- KN: Saint Kitts and Nevis
- KR: Korea, Republic of
- KW: Kuwait
- LA: Lao People's Democratic Republic
- LB: Lebanon
- LR: Liberia
- LY: Libya
- LC: Saint Lucia
- LI: Liechtenstein
- LK: Sri Lanka
- LS: Lesotho
- LT: Lithuania
- LU: Luxembourg
- LV: Latvia
- MO: Macao
- MF: Saint Martin (French part)
- MA: Morocco
- MC: Monaco
- MD: Moldova
- MG: Madagascar
- MV: Maldives
- MX: Mexico
- MH: Marshall Islands
- MK: Macedonia, Republic of
- ML: Mali
- MT: Malta
- MM: Myanmar
- ME: Montenegro
- MN: Mongolia
- MP: Northern Mariana Islands
- MZ: Mozambique
- MR: Mauritania
- MS: Montserrat
- MQ: Martinique
- MU: Mauritius
- MW: Malawi
- MY: Malaysia
- YT: Mayotte
- NA: Namibia
- NC: New Caledonia
- NE: Niger
- NF: Norfolk Island
- NG: Nigeria
- NI: Nicaragua
- NU: Niue
- NL: Netherlands
- NO: Norway
- NP: Nepal
- NR: Nauru
- NZ: New Zealand
- OM: Oman
- PK: Pakistan
- PA: Panama
- PN: Pitcairn
- PE: Peru
- PH: Philippines
- PW: Palau
- PG: Papua New Guinea
- PL: Poland
- PR: Puerto Rico
- KP: Korea, Democratic People's Republic of
- PT: Portugal
- PY: Paraguay
- PS: Palestine, State of
- PF: French Polynesia
- QA: Qatar
- RE: Réunion
- RO: Romania
- RU: Russian Federation
- RW: Rwanda
- SA: Saudi Arabia
- SD: Sudan
- SN: Senegal
- SG: Singapore
- GS: South Georgia and the South Sandwich Islands
- SH: Saint Helena, Ascension and Tristan da Cunha
- SJ: Svalbard and Jan Mayen
- SB: Solomon Islands
- SL: Sierra Leone
- SV: El Salvador
- SM: San Marino
- SO: Somalia
- PM: Saint Pierre and Miquelon
- RS: Serbia
- SS: South Sudan
- ST: Sao Tome and Principe
- SR: Suriname
- SK: Slovakia
- SI: Slovenia
- SE: Sweden
- SZ: Swaziland
- SX: Sint Maarten (Dutch part)
- SC: Seychelles
- SY: Syrian Arab Republic
- TC: Turks and Caicos Islands
- TD: Chad
- TG: Togo
- TH: Thailand
- TJ: Tajikistan
- TK: Tokelau
- TM: Turkmenistan
- TL: Timor-Leste
- TO: Tonga
- TT: Trinidad and Tobago
- TN: Tunisia
- TR: Turkey
- TV: Tuvalu
- TW: Taiwan
- TZ: Tanzania
- UG: Uganda
- UA: Ukraine
- UM: United States Minor Outlying Islands
- UY: Uruguay
- US: United States
- UZ: Uzbekistan
- VA: Holy See (Vatican City State)
- VC: Saint Vincent and the Grenadines
- VE: Venezuela
- VG: Virgin Islands, British
- VI: Virgin Islands, U.S.
- VN: Vietnam
- VU: Vanuatu
- WF: Wallis and Futuna
- WS: Samoa
- YE: Yemen
- ZA: South Africa
- ZM: Zambia
- ZW: Zimbabwe
- AA: Afar
- AB: Abkhazian
- AF: Afrikaans
- AK: Akan
- AM: Amharic
- AR: Arabic
- AN: Aragonese
- AS: Assamese
- AV: Avaric
- AE: Avestan
- AY: Aymara
- AZ: Azerbaijani
- BA: Bashkir
- BM: Bambara
- BE: Belarusian
- BN: Bengali
- BH: Bihari languages
- BI: Bislama
- BO: Tibetan
- BS: Bosnian
- BR: Breton
- BG: Bulgarian
- CA: Catalan; Valencian
- CS: Czech
- CH: Chamorro
- CE: Chechen
- CU: Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic
- CV: Chuvash
- KW: Cornish
- CO: Corsican
- CR: Cree
- CY: Welsh
- DA: Danish
- DE: German
- DV: Divehi; Dhivehi; Maldivian
- DZ: Dzongkha
- EL: Greek, Modern (1453-)
- EN: English
- EO: Esperanto
- ET: Estonian
- EU: Basque
- EE: Ewe
- FO: Faroese
- FA: Persian
- FJ: Fijian
- FI: Finnish
- FR: French
- FY: Western Frisian
- FF: Fulah
- GD: Gaelic; Scottish Gaelic
- GA: Irish
- GL: Galician
- GV: Manx
- GN: Guarani
- GU: Gujarati
- HT: Haitian; Haitian Creole
- HA: Hausa
- HE: Hebrew
- HZ: Herero
- HI: Hindi
- HO: Hiri Motu
- HR: Croatian
- HU: Hungarian
- HY: Armenian
- IG: Igbo
- IO: Ido
- II: Sichuan Yi; Nuosu
- IU: Inuktitut
- IE: Interlingue; Occidental
- IA: Interlingua (International Auxiliary Language Association)
- ID: Indonesian
- IK: Inupiaq
- IS: Icelandic
- IT: Italian
- JV: Javanese
- JA: Japanese
- KL: Kalaallisut; Greenlandic
- KN: Kannada
- KS: Kashmiri
- KA: Georgian
- KR: Kanuri
- KK: Kazakh
- KM: Central Khmer
- KI: Kikuyu; Gikuyu
- RW: Kinyarwanda
- KY: Kirghiz; Kyrgyz
- KV: Komi
- KG: Kongo
- KO: Korean
- KJ: Kuanyama; Kwanyama
- KU: Kurdish
- LO: Lao
- LA: Latin
- LV: Latvian
- LI: Limburgan; Limburger; Limburgish
- LN: Lingala
- LT: Lithuanian
- LB: Luxembourgish; Letzeburgesch
- LU: Luba-Katanga
- LG: Ganda
- MH: Marshallese
- ML: Malayalam
- MR: Marathi
- MK: Macedonian
- MG: Malagasy
- MT: Maltese
- MN: Mongolian
- MI: Maori
- MS: Malay
- MY: Burmese
- NA: Nauru
- NV: Navajo; Navaho
- NR: Ndebele, South; South Ndebele
- ND: Ndebele, North; North Ndebele
- NG: Ndonga
- NE: Nepali
- NL: Dutch; Flemish
- NN: Norwegian Nynorsk; Nynorsk, Norwegian
- NB: Bokmål, Norwegian; Norwegian Bokmål
- NO: Norwegian
- NY: Chichewa; Chewa; Nyanja
- OC: Occitan (post 1500); Provençal
- OJ: Ojibwa
- OR: Oriya
- OM: Oromo
- OS: Ossetian; Ossetic
- PA: Panjabi; Punjabi
- PI: Pali
- PL: Polish
- PT: Portuguese
- PS: Pushto; Pashto
- QU: Quechua
- RM: Romansh
- RO: Romanian; Moldavian; Moldovan
- RN: Rundi
- RU: Russian
- SG: Sango
- SA: Sanskrit
- SI: Sinhala; Sinhalese
- SK: Slovak
- SL: Slovenian
- SE: Northern Sami
- SM: Samoan
- SN: Shona
- SD: Sindhi
- SO: Somali
- ST: Sotho, Southern
- ES: Spanish; Castilian
- SQ: Albanian
- SC: Sardinian
- SR: Serbian
- SS: Swati
- SU: Sundanese
- SW: Swahili
- SV: Swedish
- TY: Tahitian
- TA: Tamil
- TT: Tatar
- TE: Telugu
- TG: Tajik
- TL: Tagalog
- TH: Thai
- TI: Tigrinya
- TO: Tonga (Tonga Islands)
- TN: Tswana
- TS: Tsonga
- TK: Turkmen
- TR: Turkish
- TW: Twi
- UG: Uighur; Uyghur
- UK: Ukrainian
- UR: Urdu
- UZ: Uzbek
- VE: Venda
- VI: Vietnamese
- VO: Volapük
- WA: Walloon
- WO: Wolof
- XH: Xhosa
- YI: Yiddish
- YO: Yoruba
- ZA: Zhuang; Chuang
- ZH: Chinese
- ZU: Zulu