- Afrikaans: Desember
- Albanian: Dhjetor
- Amharic: ዲሴምበር (Disember)
- Arabic: ديسمبر (Dīsambir)
- Armenian: Դեկտեմբեր (Dektember)
- Azerbaijani: Dekabr
- Basque: Abendua
- Belarusian: Снежань (Snezhan’)
- Bengali: ডিসেম্বর (Dicembôr)
- Bosnian: Decembar
- Bulgarian: Декември (Dekemvri)
- Catalan: Desembre
- Cebuano: Disyembre
- Chichewa: Disembala
- Chinese (Simplified): 十二月 (Shí’èr yuè)
- Chinese (Traditional): 十二月 (Shí’èr yuè)
- Corsican: Dicembre
- Croatian: Prosinac
- Czech: Prosinec
- Danish: December
- Dutch: December
- Esperanto: Decembro
- Estonian: Detsember
- Filipino: Disyembre
- Finnish: Joulukuu
- French: Décembre
- Frisian: Desimber
- Galician: Decembro
- Georgian: დეკემბერი (Dekemberi)
- German: Dezember
- Greek: Δεκέμβριος (Dekémvrios)
- Gujarati: ડિસેમ્બર (Disembar)
- Haitian Creole: Desanm
- Hausa: Disamba
- Hawaiian: Kekemapa
- Hebrew: דצמבר (Detsembar)
- Hindi: दिसंबर (Disambar)
- Hmong: Kaum Ob Hlis
- Hungarian: December
- Icelandic: Desember
- Igbo: Disemba
- Indonesian: Desember
- Irish: Nollaig
- Italian: Dicembre
- Japanese: 12月 (Jūnigatsu)
- Javanese: Desember
- Kannada: ಡಿಸೆಂಬರ್ (Disembar)
- Kazakh: Желтоқсан (Jeltoksan)
- Khmer: ធ្នូ (Thnū)
- Kinyarwanda: Ukuboza
- Korean: 12월 (Sibiwol)
- Kurdish (Kurmanji): Dezem
- Kyrgyz: Декабрь (Dekabr’)
- Lao: ທັນວາ (Thānwa)
- Latin: December
- Latvian: Decembris
- Lithuanian: Gruodis
- Luxembourgish: Dezember
- Macedonian: Декември (Dekemvri)
- Malagasy: Desambra
- Malay: Disember
- Malayalam: ഡിസംബർ (Disambar)
- Maltese: Diċembru
- Maori: Hakihea
- Marathi: डिसेंबर (Disembr)
- Mongolian: Арванхоёрдугаар сар (Arvanhoyordugaar Sar)
- Myanmar (Burmese): ဒီဇင်ဘာ (Di-zin-ba)
- Nepali: डिसेम्बर (Disembar)
- Norwegian: Desember
- Odia: ଡିସେମ୍ବର (Disembar)
- Pashto: دسمبر (Disambar)
- Persian: دسامبر (Desāmbr)
- Polish: Grudzień
- Portuguese: Dezembro
- Punjabi: ਦਸੰਬਰ (Dasambar)
- Romanian: Decembrie
- Russian: Декабрь (Dekabr’)
- Samoan: Tesema
- Scots Gaelic: Dùbhlachd
- Serbian: Децембар (Decembar)
- Sesotho: Tshitwe
- Shona: Zvita
- Sindhi: ڊسمبر (Disembar)
- Sinhala: දෙසැම්බර් (Desembar)
- Slovak: December
- Slovenian: December
- Somali: Diseembar
- Spanish: Diciembre
- Sundanese: Désémber
- Swahili: Desemba
- Swedish: December
- Tajik: Декабр (Dekabr)
- Tamil: டிசம்பர் (Disambar)
- Telugu: డిసెంబర్ (Disembar)
- Thai: ธันวาคม (Thanwakhom)
- Turkish: Aralık
- Ukrainian: Грудень (Hruden’)
- Urdu: دسمبر (December)
- Uzbek: Dekabr
- Vietnamese: Tháng Mười Hai