Here's a tentative version of a mapping between windows identifiers and locale codes. There's probably bugs in here; I've tried to match data from a number of sources with Microsoft's descriptions (as given in the comments). Extra bonus for filling in "??". Most notably, those norwegians caused some problems here (don't they always? ;-). I'm pretty sure one of these should be "no_NO": 0x0414: "nb_NO", # Norwegian (Bokmal) 0x0814: "nn_NO", # Norwegian (Nynorsk) But which one? Same goes for the spaniards: which one should be "es_ES"? 0x040a: "es_??", # Spanish (Traditional Sort) 0x0c0a: "es_??", # Spanish (Modern Sort) thanks /F # # Map Windows language code to ISO 3166/ISO 639 code. This is only # used on older Windows platforms (Windows 95, most notable). # # NOTE: this table isn't complete. If you have time and knowledge, # please fill in the missing mappings (marked with ??) and send to # the Python core team (or directly to effbot@telia.com). # # Thanks /F windows_lang = { 0x0436: "af_AF", # Afrikaans 0x041c: "sq_AL", # Albanian 0x0401: "ar_SA", # Arabic (Saudi Arabia) 0x0801: "ar_IQ", # Arabic (Iraq) 0x0c01: "ar_EG", # Arabic (Egypt) 0x1001: "ar_LY", # Arabic (Libya) 0x1401: "ar_DZ", # Arabic (Algeria) 0x1801: "ar_MA", # Arabic (Morocco) 0x1c01: "ar_TN", # Arabic (Tunisia) 0x2001: "ar_OM", # Arabic (Oman) 0x2401: "ar_YE", # Arabic (Yemen) 0x2801: "ar_SY", # Arabic (Syria) 0x2c01: "ar_JO", # Arabic (Jordan) 0x3001: "ar_LB", # Arabic (Lebanon) 0x3401: "ar_KW", # Arabic (Kuwait) 0x3801: "ar_AE", # Arabic (U.A.E.) 0x3c01: "ar_BH", # Arabic (Bahrain) 0x4001: "ar_QA", # Arabic (Qatar) 0x042b: "hy_AM", # Armenian 0x044d: "as_??", # Assamese 0x042c: "az_AZ", # Azeri (Latin) 0x082c: "az_??", # Azeri (Cyrillic) 0x042d: "eu_ES", # Basque 0x0423: "be_BY", # Belarussian 0x0445: "bn_??", # Bengali 0x0402: "bg_BG", # Bulgarian 0x0455: "my_MM", # Burmese 0x0403: "ca_ES", # Catalan 0x0404: "zh_TW", # Chinese (Taiwan) 0x0804: "zh_CN", # Chinese (PRC) 0x0c04: "zh_HK", # Chinese (Hong Kong SAR, PRC) 0x1004: "zh_SG", # Chinese (Singapore) 0x1404: "zh_MO", # Chinese (Macau SAR) 0x041a: "hr_HR", # Croatian (Hrvatska) 0x0405: "cs_CZ", # Czech 0x0406: "da_DK", # Danish 0x0413: "nl_NL", # Dutch (Netherlands) 0x0813: "nl_BE", # Dutch (Belgium) 0x0409: "en_US", # English (United States) 0x0809: "en_UK", # English (United Kingdom) 0x0c09: "en_AU", # English (Australian) 0x1009: "en_CA", # English (Canadian) 0x1409: "en_NZ", # English (New Zealand) 0x1809: "en_IE", # English (Ireland) 0x1c09: "en_ZA", # English (South Africa) 0x2009: "en_JM", # English (Jamaica) 0x2409: "en_??", # English (Caribbean) 0x2809: "en"_BZ, # English (Belize) 0x2c09: "en_TT", # English (Trinidad) 0x3009: "en_ZW", # English (Zimbabwe) 0x3409: "en_PH", # English (Philippines) 0x0425: "et_EE", # Estonian 0x0438: "fo_FO", # Faeroese 0x0429: "fa_IR", # Farsi 0x040b: "fi_FI", # Finnish 0x040c: "fr_FR", # French (Standard) 0x080c: "fr_BE", # French (Belgian) 0x0c0c: "fr_CA", # French (Canadian) 0x100c: "fr_CH", # French (Switzerland) 0x140c: "fr_LU", # French (Luxembourg) 0x180c: "fr_MC", # French (Monaco) 0x0437: "ka_GE", # Georgian 0x0407: "de_DE", # German (Standard) 0x0807: "de_CH", # German (Switzerland) 0x0c07: "de_AT", # German (Austria) 0x1007: "de_LU", # German (Luxembourg) 0x1407: "de_LI", # German (Liechtenstein) 0x0408: "el_GR", # Greek 0x0447: "gu_??", # Gujarati 0x040d: "iw_IL", # Hebrew 0x0439: "hi_IN", # Hindi 0x040e: "hu_HU", # Hungarian 0x040f: "is_IS", # Icelandic 0x0421: "id_ID", # Indonesian 0x0410: "it_IT", # Italian (Standard) 0x0810: "it_CH", # Italian (Switzerland) 0x0411: "ja_JA", # Japanese 0x044b: "kn_??", # Kannada 0x0860: "ks_IN", # Kashmiri (India) 0x043f: "kk_??", # Kazakh 0x0457: "??_??", # Konkani 0x0412: "ko_??", # Korean 0x0812: "ko_??", # Korean (Johab) 0x0426: "lv_LV", # Latvian 0x0427: "lt_LT", # Lithuanian 0x0827: "lt_??", # Lithuanian (Classic) 0x042f: "mk_MK", # Macedonian 0x043e: "ms_MY", # Malay (Malaysian) 0x083e: "ms_??", # Malay (Brunei Darussalam) 0x044c: "ml_??", # Malayalam 0x0458: "??_??", # Manipuri 0x044e: "mr_??", # Marathi 0x0861: "ne_IN", # Nepali (India) 0x0414: "nb_NO", # Norwegian (Bokmal) 0x0814: "nn_NO", # Norwegian (Nynorsk) 0x0448: "or_??", # Oriya 0x0415: "pl_PL", # Polish 0x0416: "pt_BR", # Portuguese (Brazil) 0x0816: "pt_PT", # Portuguese (Standard) 0x0446: "pa_??", # Punjabi 0x0418: "ro_RO", # Romanian 0x0419: "ru_RU", # Russian 0x044f: "sa_??", # Sanskrit 0x0c1a: "sr_??", # Serbian (Cyrillic) 0x081a: "sr_??", # Serbian (Latin) 0x0459: "sd_??", # Sindhi 0x041b: "sk_??", # Slovak 0x0424: "sl_SL", # Slovenian 0x040a: "es_??", # Spanish (Traditional Sort) 0x080a: "es_MX", # Spanish (Mexican) 0x0c0a: "es_??", # Spanish (Modern Sort) 0x100a: "es_GT", # Spanish (Guatemala) 0x140a: "es_??", # Spanish (Costa Rica) 0x180a: "es_PA", # Spanish (Panama) 0x1c0a: "es_DO", # Spanish (Dominican Republic) 0x200a: "es_VE", # Spanish (Venezuela) 0x240a: "es_CO", # Spanish (Colombia) 0x280a: "es_PE", # Spanish (Peru) 0x2c0a: "es_AR", # Spanish (Argentina) 0x300a: "es_EC", # Spanish (Ecuador) 0x340a: "es_CL", # Spanish (Chile) 0x380a: "es_UY", # Spanish (Uruguay) 0x3c0a: "es_PY", # Spanish (Paraguay) 0x400a: "es_BO", # Spanish (Bolivia) 0x440a: "es_SV", # Spanish (El Salvador) 0x480a: "es_HN", # Spanish (Honduras) 0x4c0a: "es_NI", # Spanish (Nicaragua) 0x500a: "es_PR", # Spanish (Puerto Rico) 0x0430: "??_??", # Sutu 0x0441: "sw_KE", # Swahili (Kenya) 0x041d: "sv_SE", # Swedish 0x081d: "sv_FI", # Swedish (Finland) 0x0449: "ta_??", # Tamil 0x0444: "tt_??", # Tatar (Tatarstan) 0x044a: "te_??", # Telugu 0x041e: "th_TH", # Thai 0x041f: "tr_TR", # Turkish 0x0422: "tk_UA", # Ukrainian 0x0420: "ur_PK", # Urdu (Pakistan) 0x0820: "ur_IN", # Urdu (India) 0x0443: "uz_UZ", # Uzbek (Latin) 0x0843: "uz_??", # Uzbek (Cyrillic) 0x042a: "vi_VN", # Vietnamese }