nextcloud/settings/languageCodes.php

<?php return array(
'ab'=>'Abkhazian',
'aa'=>'Afar',
'af'=>'Afrikaans',
'sq'=>'Albanian',
'am'=>'Amharic',
'ar'=>'Arabic',
'hy'=>'Armenian',
'as'=>'Assamese',
'ay'=>'Aymara',
'az'=>'Azerbaijani',
'ba'=>'Bashkir',
'eu'=>'Basque',
'bn'=>'Bengali (Bangla)',
'dz'=>'Bhutani',
'bh'=>'Bihari',
'bi'=>'Bislama',
'br'=>'Breton',
'bg'=>'Bulgarian',
'my'=>'Burmese',
'be'=>'Byelorussian (Belarusian)',
'km'=>'Cambodian',
'ca'=>'Catalan',
'zh'=>'Chinese (Simplified)',
'zh'=>'Chinese (Traditional)',
'co'=>'Corsican',
'hr'=>'Croatian',
'cs'=>'Czech',
'da'=>'Danish',
'nl'=>'Dutch',
'en'=>'English',
'eo'=>'Esperanto',
'et'=>'Estonian',
'fo'=>'Faeroese',
'fa'=>'Farsi',
'fj'=>'Fiji',
'fi'=>'Finnish',
'nl-be'=>'Flemish',
'fr'=>'French',
'fy'=>'Frisian',
'gl'=>'Galician',
'gd'=>'Gaelic (Scottish)',
'gv'=>'Gaelic (Manx)',
'ka'=>'Georgian',
'de'=>'German',
'el'=>'Greek',
'kl'=>'Greenlandic',
'gn'=>'Guarani',
'gu'=>'Gujarati',
'ha'=>'Hausa',
'he'=>'Hebrew',
'iw'=>'Hebrew',
'hi'=>'Hindi',
'hu'=>'Hungarian',
'is'=>'Icelandic',
'id'=>'Indonesian',
'in'=>'Indonesian',
'ia'=>'Interlingua',
'ie'=>'Interlingue',
'iu'=>'Inuktitut',
'ik'=>'Inupiak',
'ga'=>'Irish',
'it'=>'Italian',
'ja'=>'Japanese',
'jv'=>'Javanese',
'kn'=>'Kannada',
'ks'=>'Kashmiri',
'kk'=>'Kazakh',
'rw'=>'Kinyarwanda (Ruanda)',
'ky'=>'Kirghiz',
'rn'=>'Kirundi (Rundi)',
'ko'=>'Korean',
'ku'=>'Kurdish',
'lo'=>'Laothian',
'la'=>'Latin',
'lv'=>'Latvian (Lettish)',
'li'=>'Limburgish ( Limburger)',
'ln'=>'Lingala',
'lt'=>'Lithuanian',
'mk'=>'Macedonian',
'mg'=>'Malagasy',
'ms'=>'Malay',
'ml'=>'Malayalam',
'mt'=>'Maltese',
'mi'=>'Maori',
'mr'=>'Marathi',
'mo'=>'Moldavian',
'mn'=>'Mongolian',
'na'=>'Nauru',
'ne'=>'Nepali',
'no'=>'Norwegian',
'oc'=>'Occitan',
'or'=>'Oriya',
'om'=>'Oromo (Afan, Galla)',
'ps'=>'Pashto (Pushto)',
'pl'=>'Polish',
'pt'=>'Portuguese',
'pa'=>'Punjabi',
'qu'=>'Quechua',
'rm'=>'Rhaeto-Romance',
'ro'=>'Romanian',
'ru'=>'Russian',
'sm'=>'Samoan',
'sg'=>'Sangro',
'sa'=>'Sanskrit',
'sr'=>'Serbian',
'sh'=>'Serbo-Croatian',
'st'=>'Sesotho',
'tn'=>'Setswana',
'sn'=>'Shona',
'sd'=>'Sindhi',
'si'=>'Sinhalese',
'ss'=>'Siswati',
'sk'=>'Slovak',
'sl'=>'Slovenian',
'so'=>'Somali',
'es'=>'Spanish',
'su'=>'Sundanese',
'sw'=>'Swahili (Kiswahili)',
'sv'=>'Swedish',
'tl'=>'Tagalog',
'tg'=>'Tajik',
'ta'=>'Tamil',
'tt'=>'Tatar',
'te'=>'Telugu',
'th'=>'Thai',
'bo'=>'Tibetan',
'ti'=>'Tigrinya',
'to'=>'Tonga',
'ts'=>'Tsonga',
'tr'=>'Turkish',
'tk'=>'Turkmen',
'tw'=>'Twi',
'ug'=>'Uighur',
'uk'=>'Ukrainian',
'ur'=>'Urdu',
'uz'=>'Uzbek',
'vi'=>'Vietnamese',
'vo'=>'Volap<61>k',
'cy'=>'Welsh',
'wo'=>'Wolof',
'xh'=>'Xhosa',
'yi'=>'Yiddish',
'ji'=>'Yiddish',
'yo'=>'Yoruba',
'zu'=>'Zulu',
);