This case-sensitive code system urn:ietf:bcp:47 provides a fragment that includes following codes:

Code	Display
af-ZA	Afrikaans (South Africa)
am-ET	Amharic (Ethiopia)
ar-AE	Arabic (U.A.E.)
ar-BH	Arabic (Bahrain)
ar-DZ	Arabic (Algeria)
ar-EG	Arabic (Egypt)
ar-IQ	Arabic (Iraq)
ar-JO	Arabic (Jordan)
ar-KW	Arabic (Kuwait)
ar-LB	Arabic (Lebanon)
ar-LY	Arabic (Libya)
ar-MA	Arabic (Morocco)
ar-OM	Arabic (Oman)
ar-QA	Arabic (Qatar)
ar-SA	Arabic (Saudi Arabia)
ar-SY	Arabic (Syria)
ar-TN	Arabic (Tunisia)
ar-YE	Arabic (Yemen)
arn-CL	Mapudungun (Chile)
as-IN	Assamese (India)
az-AZ	Azeri (Cyrillic) (Azerbaijan)
az-AZ	Azeri (Latin) (Azerbaijan)
ba-RU	Bashkir (Russia)
be-BY	Belarusian (Belarus)
bg-BG	Bulgarian (Bulgaria)
bn-BD	Bengali (Bangladesh)
bn-IN	Bengali (India)
bo-CN	Tibetan (People's Republic of China)
br-FR	Breton (France)
bs-BA	Bosnian (Cyrillic) (Bosnia and Herzegovina)
bs-BA	Bosnian (Latin) (Bosnia and Herzegovina)
ca-ES	Catalan (Spain)
co-FR	Corsican (France)
cs-CZ	Czech (Czech Republic)
cy-GB	Welsh (United Kingdom)
da-DK	Danish (Denmark)
de-AT	German (Austria)
de-CH	German (Switzerland)
de-DE	German (Germany)
de-LI	German (Liechtenstein)
de-LU	German (Luxembourg)
dsb-DE	Lower Sorbian (Germany)
dv-MV	Divehi (Maldives)
el-GR	Greek (Greece)
en-029	English (Caribbean)
en-AU	English (Australia)
en-BZ	English (Belize)
en-CA	English (Canada)
en-GB	English (United Kingdom)
en-IE	English (Ireland)
en-IN	English (India)
en-JM	English (Jamaica)
en-MY	English (Malaysia)
en-NZ	English (New Zealand)
en-PH	English (Republic of the Philippines)
en-SG	English (Singapore)
en-TT	English (Trinidad and Tobago)
en-US	English (United States)
en-ZA	English (South Africa)
en-ZW	English (Zimbabwe)
es-AR	Spanish (Argentina)
es-BO	Spanish (Bolivia)
es-CL	Spanish (Chile)
es-CO	Spanish (Colombia)
es-CR	Spanish (Costa Rica)
es-DO	Spanish (Dominican Republic)
es-EC	Spanish (Ecuador)
es-ES	Spanish (Spain)
es-GT	Spanish (Guatemala)
es-HN	Spanish (Honduras)
es-MX	Spanish (Mexico)
es-NI	Spanish (Nicaragua)
es-PA	Spanish (Panama)
es-PE	Spanish (Peru)
es-PR	Spanish (Puerto Rico)
es-PY	Spanish (Paraguay)
es-SV	Spanish (El Salvador)
es-US	Spanish (United States)
es-UY	Spanish (Uruguay)
es-VE	Spanish (Bolivarian Republic of Venezuela)
et-EE	Estonian (Estonia)
eu-ES	Basque (Spain)
fa-IR	Persian (Iran)
fi-FI	Finnish (Finland)
fil-PH	Filipino (Philippines)
fo-FO	Faroese (Faroe Islands)
fr-BE	French (Belgium)
fr-CA	French (Canada)
fr-CH	French (Switzerland)
fr-FR	French (France)
fr-LU	French (Luxembourg)
fr-MC	French (Principality of Monaco)
fy-NL	Frisian (Netherlands)
ga-IE	Irish (Ireland)
gd-GB	Scottish Gaelic (United Kingdom)
gl-ES	Galician (Spain)
gsw-FR	Alsatian (France)
gu-IN	Gujarati (India)
ha-NG	Hausa (Latin) (Nigeria)
he-IL	Hebrew (Israel)
hi-IN	Hindi (India)
hr-BA	Croatian (Bosnia and Herzegovina)
hr-HR	Croatian (Croatia)
hsb-DE	Upper Sorbian (Germany)
hu-HU	Hungarian (Hungary)
hy-AM	Armenian (Armenia)
id-ID	Indonesian (Indonesia)
ig-NG	Igbo (Nigeria)
ii-CN	Yi (People's Republic of China)
is-IS	Icelandic (Iceland)
it-CH	Italian (Switzerland)
it-IT	Italian (Italy)
iu-CA	Inuktitut (Latin) (Canada)
iu-CA	Inuktitut (Syllabics) (Canada)
ja-JP	Japanese (Japan)
ka-GE	Georgian (Georgia)
kk-KZ	Kazakh (Kazakhstan)
kl-GL	Greenlandic (Greenland)
km-KH	Khmer (Cambodia)
kn-IN	Kannada (India)
ko-KR	Korean (Korea)
kok-IN	Konkani (India)
ky-KG	Kyrgyz (Kyrgyzstan)
lb-LU	Luxembourgish (Luxembourg)
lo-LA	Lao (Lao P.D.R.)
lt-LT	Lithuanian (Lithuania)
lv-LV	Latvian (Latvia)
mi-NZ	Maori (New Zealand)
mk-MK	Macedonian (FYROM) (Macedonia (FYROM))
ml-IN	Malayalam (India)
mn-CN	Mongolian (Traditional Mongolian) (People's Republic of China)
mn-MN	Mongolian (Cyrillic) (Mongolia)
moh-CA	Mohawk (Canada)
mr-IN	Marathi (India)
ms-BN	Malay (Brunei Darussalam)
ms-MY	Malay (Malaysia)
mt-MT	Maltese (Malta)
nb-NO	Norwegian (Bokmal) (Norway)
ne-NP	Nepali (Nepal)
nl-BE	Dutch (Belgium)
nl-NL	Dutch (Netherlands)
nn-NO	Norwegian (Nynorsk) (Norway)
nso-ZA	Sesotho sa Leboa (South Africa)
oc-FR	Occitan (France)
or-IN	Oriya (India)
pa-IN	Punjabi (India)
pl-PL	Polish (Poland)
prs-AF	Dari (Afghanistan)
ps-AF	Pashto (Afghanistan)
pt-BR	Portuguese (Brazil)
pt-PT	Portuguese (Portugal)
qut-GT	K'iche (Guatemala)
quz-BO	Quechua (Bolivia)
quz-EC	Quechua (Ecuador)
quz-PE	Quechua (Peru)
rm-CH	Romansh (Switzerland)
ro-RO	Romanian (Romania)
ru-RU	Russian (Russia)
rw-RW	Kinyarwanda (Rwanda)
sa-IN	Sanskrit (India)
sah-RU	Yakut (Russia)
se-FI	Sami (Northern) (Finland)
se-NO	Sami (Northern) (Norway)
se-SE	Sami (Northern) (Sweden)
si-LK	Sinhala (Sri Lanka)
sk-SK	Slovak (Slovakia)
sl-SI	Slovenian (Slovenia)
sma-NO	Sami (Southern) (Norway)
sma-SE	Sami (Southern) (Sweden)
smj-NO	Sami (Lule) (Norway)
smj-SE	Sami (Lule) (Sweden)
smn-FI	Sami (Inari) (Finland)
sms-FI	Sami (Skolt) (Finland)
sq-AL	Albanian (Albania)
sr-BA	Serbian (Cyrillic) (Bosnia and Herzegovina)
sr-BA	Serbian (Latin) (Bosnia and Herzegovina)
sr-CS	Serbian (Cyrillic) (Serbia and Montenegro (Former))
sr-CS	Serbian (Latin) (Serbia and Montenegro (Former))
sr-ME	Serbian (Cyrillic) (Montenegro)
sr-ME	Serbian (Latin) (Montenegro)
sr-RS	Serbian (Cyrillic) (Serbia)
sr-RS	Serbian (Latin) (Serbia)
sv-FI	Swedish (Finland)
sv-SE	Swedish (Sweden)
sw-KE	Kiswahili (Kenya)
syr-SY	Syriac (Syria)
ta-IN	Tamil (India)
te-IN	Telugu (India)
tg-TJ	Tajik (Cyrillic) (Tajikistan)
th-TH	Thai (Thailand)
tk-TM	Turkmen (Turkmenistan)
tn-ZA	Setswana (South Africa)
tr-TR	Turkish (Turkey)
tt-RU	Tatar (Russia)
tzm-DZ	Tamazight (Latin) (Algeria)
ug-CN	Uyghur (People's Republic of China)
uk-UA	Ukrainian (Ukraine)
ur-PK	Urdu (Islamic Republic of Pakistan)
uz-UZ	Uzbek (Cyrillic) (Uzbekistan)
uz-UZ	Uzbek (Latin) (Uzbekistan)
vi-VN	Vietnamese (Vietnam)
wo-SN	Wolof (Senegal)
xh-ZA	isiXhosa (South Africa)
yo-NG	Yoruba (Nigeria)
zh-CN	Chinese (Simplified) Legacy (People's Republic of China)
zh-HK	Chinese (Traditional) Legacy (Hong Kong S.A.R.)
zh-MO	Chinese (Traditional) Legacy (Macao S.A.R.)
zh-SG	Chinese (Simplified) Legacy (Singapore)
zh-TW	Chinese (Traditional) Legacy (Taiwan)
zu-ZA	isiZulu (South Africa)