- Afrikaans: Misterie
- Albanian: Mister
- Amharic: ምስጢር (Məsṭir)
- Arabic: لغز (Lughz)
- Armenian: Ազգանություն (Azganutyun)
- Azerbaijani: Sirr
- Basque: Misterio
- Belarusian: Таемніца (Tayemnitsa)
- Bengali: রহস্য (Rahasya)
- Bosnian: Misterija
- Bulgarian: Мистерия (Misteriya)
- Catalan: Misteri
- Cebuano: Misteryo
- Chichewa: Chinsinsi
- Chinese (Simplified): 谜 (Mí)
- Chinese (Traditional): 謎 (Mí)
- Corsican: Misteru
- Croatian: Misterij
- Czech: Záhada
- Danish: Mysterium
- Dutch: Mysterie
- Esperanto: Mistero
- Estonian: Müsteerium
- Filipino: Misteryo
- Finnish: Mysteeri
- French: Mystère
- Frisian: Mistery
- Galician: Misterio
- Georgian: საიდუმლო (Saidumlo)
- German: Geheimnis
- Greek: Μυστήριο (Mýstrio)
- Gujarati: રહસ્ય (Rahasya)
- Haitian Creole: Mistè
- Hebrew: תעלומה (Ta’aluma)
- Hindi: रहस्य (Rahasya)
- Hmong: Xeem Ntseeg
- Hungarian: Rejtély
- Icelandic: Leyndarmál
- Igbo: Ụjọ
- Indonesian: Misteri
- Irish: Rún
- Italian: Mistero
- Japanese: ミステリー (Misuterī)
- Javanese: Misteri
- Kannada: ರಹಸ್ಯ (Rahasya)
- Kazakh: Жұмбақ (Zhumbak)
- Khmer: ឧត្តម (Ottom)
- Kinyarwanda: Ibanga
- Korean: 미스터리 (Miseuteori)
- Kurdish (Kurmanji): Piştrastî
- Kyrgyz: Жұмбақ (Zhumbak)
- Lao: ລາວ (Law)
- Latin: Mysterium
- Latvian: Noslēpums
- Lithuanian: Paslaptis
- Luxembourgish: Mysteri
- Macedonian: Тајна (Tajna)
- Malagasy: Mistery
- Malay: Misteri
- Malayalam: രഹസ്യ (Rahasya)
- Maltese: Misteru
- Maori: Mīharo
- Marathi: रहस्य (Rahasya)
- Mongolian: Нууц (Nuuts)
- Myanmar (Burmese): လျှို့ဝှက်ချက် (Lhyo Whk Khchet)
- Nepali: रहस्य (Rahasya)
- Norwegian: Mysterium
- Odia: ରହସ୍ୟ (Rahashya)
- Pashto: معما (Mo’ama)
- Persian: معما (Mo’ama)
- Polish: Tajemnica
- Portuguese: Mistério
- Punjabi: ਰਹੱਸ (Rahas)
- Romanian: Mister
- Russian: Тайна (Tayna)
- Samoan: Misea
- Scots Gaelic: Dùbhlan
- Serbian: Мистерија (Misterija)
- Sesotho: Phello
- Shona: Chinoshamisa
- Sindhi: معما (Mo’ama)
- Sinhala: රහස (Rahasa)
- Slovak: Záhada
- Slovenian: Misterij
- Somali: Sir
- Spanish: Misterio
- Sundanese: Misteri
- Swahili: Siri
- Swedish: Mysterium
- Tajik: Маъз (Ma’z)
- Tamil: இரகசியம் (Irakaciyam)
- Telugu: రహస్యము (Rahasyaṁ)
- Thai: ปริศนา (Prisana)
- Turkish: Gizem
- Ukrainian: Таємниця (Tayemnytsya)
- Urdu: معمہ (Mo’ama)
- Uzbek: Sir
- Vietnamese: Bí mật
- Welsh: Dirgelwch
- Yiddish: ראַדז (Rad)