- Arabic: الأُرْثُوذُكْسِيَّة f (al-ʔurṯūḏuksiyya)
- Armenian: ուղղափառություն (hy) (uġġapʻaṙutʻyun)
- Old Armenian: ուղղափառութիւն (ułłapʻaṙutʻiwn)
- Azerbaijani:
- Abjad: اورتودوقسلق (ortodoqsluq), اورتادوسلق (ortadosluq)
- Roman: pravoslavlıq
- Belarusian: правасла́ўе n (pravasláŭje)
- Bulgarian: правосла́вие (bg) n (pravoslávie)
- Chinese:
- Mandarin: 東正教/东正教 (zh) (dōngzhèngjiào), 正統教/正统教 (zhèngtǒngjiào), 正教 (zh) (zhèngjiào)
- Crimean Tatar: ortodokslıq
- Czech: pravoslaví n
- Dutch: orthodoxie (nl) f
- Erzya: видекемевкс (viďekemevks)
- Estonian: õigeusk
- Finnish: ortodoksisuus (fi) (Eastern Orthodoxy), ortodoksijuutalaisuus (Orthodox Judaism)
- French: orthodoxie (fr) f
- Gagauz: pravoslavlık, ortodoxluk
- Galician: ortodoxismo
- Georgian: მართლმადიდებლობა (martlmadidebloba)
- German: Orthodoxie f, Rechtgläubigkeit f
- Greek: Ορθοδοξία (el) f (Orthodoxía)
- Hebrew: אורתודוקסיה f (ortodoksiyá)
- Hungarian: ortodoxia (hu)
- Indonesian: Ortodoksi
- Italian: ortodossia (it) f
- Japanese: 正教会 (ja) (せいきょうかい, seikyōkai), 正教 (ja) (せいきょう, seikyō)
- Karaim: yavanlıx
- Kazakh: православие (pravoslavie)
- Korean: 정교회(正敎會) (jeonggyohoe), 정교(正敎) (ko) (jeonggyo)
- Kyrgyz: православие (pravoslaviye)
- Latvian: pareizticība f
- Lithuanian: stačiatikybė f
- Macedonian: правосла́вие n (pravoslávie)
- Ottoman Turkish: شرق كلیساسی (sharq kilisesi, literally “eastern church”)
- Polish: prawosławie (pl) n
- Portuguese: ortodoxia (pt) f, ortodoxismo m
- Romanian: ortodoxism (ro) n, ortodoxie (ro) f
- Russian: правосла́вие (ru) n (pravoslávije)
- Serbo-Croatian:
- Cyrillic: православље n
- Roman: pravoslavlje (sh) n
- Slovak: pravoslávie n
- Slovene: pravoslavje n
- Spanish: ortodoxia (es) f
- Tajik: православие (pravoslaviye)
- Tatar: православие (prawoslawiye)
- Turkish: Ortodoksluk (tr)
- Ukrainian: правосла́в'я (uk) n (pravoslávʺja)
- Uzbek: pravoslaviye (uz)
- Vietnamese: Chính Thống giáo Đông phương
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