| Language | Name | Code |
|---|---|---|
| ang | Langfordscīr | ang |
| Arabic | مقاطعة لونجفورد | ar |
| Asturian | Condáu de Longford | ast |
| Belarusian | графства Лонгфард | be |
| be-tarask | Лонгфард | be-tarask |
| Bulgarian | Лонгфорд | bg |
| Bengali | কাউন্টি লংফোর্ড | bn |
| Breton | Kontelezh An Longfort | br |
| Catalan | comtat de Longford | ca |
| Cebuano | An Longfort | ceb |
| Czech | Hrabství Longford | cs |
| Welsh | Swydd Longfoirt | cy |
| Danish | County Longford | da |
| German | County Longford | de |
| Modern Greek (1453-) | Κομητεία Λόνγκφορντ | el |
| English | County Longford | en |
| Esperanto | Graflando Longford | eo |
| Spanish | Condado de Longford | es |
| Basque | Longfordeko konderria | eu |
| Persian | شهرستان لانگفورد | fa |
| Finnish | Longfordin kreivikunta | fi |
| French | comté de Longford | fr |
| frr | Longford | frr |
| Irish | Contae an Longfoirt | ga |
| Scottish Gaelic | Contae an Longfoirt | gd |
| Galician | Condado de Longford | gl |
| Gujarati | કાઉન્ટી લોંગફોર્ડ | gu |
| Manx | Coontae yn Lhongfort | gv |
| Hebrew | מחוז לונגפורד | he |
| Hindi | लोंग्फोर्ड काउंटी | hi |
| Hungarian | Longford megye | hu |
| Indonesian | County Longford | id |
| Italian | Longford | it |
| Japanese | ロングフォード県 | ja |
| Georgian | ლონგფორდის საგრაფო | ka |
| Kannada | ಕೌಂಟಿ ಲಾಂಗ್ಫೋರ್ಡ್ | kn |
| Korean | 롱퍼드주 | ko |
| Kurdish | County Longford | ku |
| Latin | Comitatus Longofordiensis | la |
| Lithuanian | Longfordo grafystė | lt |
| Latvian | Longfordas grāfiste | lv |
| Macedonian | Лонгфорд | mk |
| Marathi | काउंटी लॉंगफोर्ड | mr |
| Malay (macrolanguage) | County Longford | ms |
| nan | Longford Kūn | nan |
| Norwegian Bokmål | Longford | nb |
| Dutch | County Longford | nl |
| Norwegian Nynorsk | County Longford | nn |
| Polish | Longford | pl |
| pnb | لانگفورڈ | pnb |
| Portuguese | Condado de Longford | pt |
| Romanian | Comitatul Longford | ro |
| Russian | Лонгфорд | ru |
| Scots | Coonty Longford | sco |
| sh | Okrug Longford | sh |
| Sinhala | ලෝන්ග්ෆර්ඩ් ප්රාන්තය | si |
| Slovak | Longford | sk |
| Slovenian | County Longford | sl |
| Serbian | Лонгфорд | sr |
| sr-ec | Лонгфорд | sr-ec |
| sr-el | Longford | sr-el |
| Swedish | Longford | sv |
| Swahili (macrolanguage) | Wilaya ya Longford | sw |
| Tamil | கவுண்டி லோங்போர்ட | ta |
| Telugu | లాంగ్ఫోర్డ్ కౌంటీ | te |
| Tajik | Вилояти Лонгфорд | tg |
| tg-latn | Vilojati Longford | tg-latn |
| Thai | ลองฟอร์ด | th |
| Turkish | Longford County | tr |
| Ukrainian | Лонгфорд | uk |
| Urdu | کاؤنٹی لونگفرڈ | ur |
| Vietnamese | Hạt Longford | vi |
| Chinese | 朗福德郡 | zh |
| zh-cn | 朗福德郡 | zh-cn |
| zh-hans | 朗福德郡 | zh-hans |
| zh-hant | 朗福德郡 | zh-hant |
| zh-hk | 朗福德郡 | zh-hk |
| zh-sg | 朗福德郡 | zh-sg |
| zh-tw | 朗福德郡 | zh-tw |