| English | eng-000 |
| open letter | |
| Afrikaans | afr-000 | ope brief |
| Universal Networking Language | art-253 | open letter(icl>letter) |
| biełaruskaja łacinka | bel-002 | adkryty lìst |
| bosanski | bos-000 | otvoreno pismo |
| bălgarski ezik | bul-001 | otvòreno pismò |
| català | cat-000 | carta oberta |
| čeština | ces-000 | otevřený dopis |
| 普通话 | cmn-000 | 公开信 |
| 國語 | cmn-001 | 公開信 |
| Hànyǔ | cmn-003 | gōng kāi xìn |
| Qırımtatar tili | crh-000 | açıq mektüp |
| dansk | dan-000 | åbent brev |
| Deutsch | deu-000 | offener Brief |
| dolnoserbska reč | dsb-000 | zjawny list |
| eesti | ekk-000 | kontuurtäht |
| ελληνικά | ell-000 | ανοιχτή επιστολή |
| Ellinika | ell-003 | anoichtī epistolī |
| Esperanto | epo-000 | publika letero |
| suomi | fin-000 | avoin kirje |
| français | fra-000 | lettre ouverte |
| galego | glg-000 | carta aberta |
| Srpskohrvatski | hbs-001 | otvoreno pismo |
| हिन्दी | hin-000 | विरोध पत्र |
| hrvatski | hrv-000 | otvoreno pismo |
| hornjoserbšćina | hsb-000 | zjawny list |
| magyar | hun-000 | nyílt levél |
| íslenska | isl-000 | opið bréf |
| italiano | ita-000 | lettera aperta |
| 日本語 | jpn-000 | 公開状 |
| にほんご | jpn-002 | こうかいじょう |
| Lëtzebuergesch | ltz-000 | oppene Bréif |
| Malti | mlt-000 | ittra miftuħa |
| Tâi-gí | nan-003 | kong-khai-sìn |
| Nederlands | nld-000 | open brief |
| nynorsk | nno-000 | ope brev |
| bokmål | nob-000 | åpent brev |
| occitan | oci-000 | letra dobèrta |
| فارسی | pes-000 | نامه سر گشاده |
| polski | pol-000 | list otwarty |
| português | por-000 | carta aberta |
| română | ron-000 | scrisoare deschisă |
| русский | rus-000 | открытое письмо |
| russkij | rus-001 | otkrýtoe pisʹmó |
| slovenščina | slv-000 | odprto pismo |
| español | spa-000 | carta abierta |
| srpski | srp-001 | otvoreno pismo |
| svenska | swe-000 | öppet brev |
| tojikī | tgk-001 | maktubi kušod |
| ภาษาไทย | tha-000 | จดหมายประท้วง |
| ภาษาไทย | tha-000 | จดหมายร้องเรียน |
| ภาษาไทย | tha-000 | จดหมายเปิดผนึก |
| Türkçe | tur-000 | açık mektup |
| Latynytsia | ukr-001 | vìdkrítij list |