- Afrikaans: sterrekundige
- Albanian: astronom (sq)
- Arabic: عَالِم فَلَك m (ʿālim falak)
- Armenian: աստղաբաշխ (hy) (astłabašx), աստղագետ (hy) (astłaget)
- Asturian: astrónomu m
- Azeri: astronom
- Basque: astronomo (eu)
- Belarusian: астраном m (astranom)
- Bulgarian: астроном m (astronom)
- Catalan: astrònom m, astrònoma f
- Chinese:
- Mandarin: 天文學家 (zh), 天文学家 (zh) (tiānwénxuéjiā)
- Czech: hvězdář m, astronom (cs) m, astronomka f
- Danish: astronom (da) c
- Dutch: astronoom (nl) m, sterrenkundige (nl) c
- Esperanto: (♂♀) astronomo, (♂) virastronomo, (♀) astronomino
- Estonian: astronoom
- Faroese: stjørnufrøðingur m
- Finnish: tähtitieteilijä (fi), astronomi (fi)
- French: astronome (fr) m, f
- Galician: astrónomo (gl) m
- Georgian: ასტრონომი (asṭronomi)
- German: Astronom (de) m, Astronomus m, Himmelskundler m, Sternkundiger m; (♀) Astronomin (de) f
- Greek: αστρονόμος (el) m, f (astronómos)
- Hebrew: אסטרונום (he) m (astrónom), אסטרונוםית f (astrónomit)
- Hindi: खगोल विज्ञानी m (khagol vijñānī)
- Hungarian: csillagász (hu)
- Indonesian: astronom (id)
- Irish: réalteolaí m
- Italian: astronomo (it) m, astronoma f
- Japanese: 天文学者 (ja) (tenmon-gakusha)
- Korean: 천문학자 (ko) (cheonmunhakja)
- Lao: ນັກດາລາສາດ (nak dā lā sāt)
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- Latin: astronomus m, astrologus (la) m
- Latvian: astronoms m, astronome f
- Lithuanian: astronomas (lt) m, astronomienė f
- Macedonian: астроном m (astronom)
- Norwegian:
- Bokmål: astronom m
- Nynorsk: astronom (nn) m
- Persian: ستارهشناس (setâre-šenâs), اخترشناس (fa) (axtar-šenâs), اخترمار (fa) (axtarmâr)
- Polish: astronom (pl) m, astronomka (pl) f
- Portuguese: astrónomo (pt) m, (Portugal), astrônomo (pt) m, (Brazil)
- Romanian: astronom (ro) m, astronomă (ro) f
- Russian: астроно́м (ru) m (astronóm)
- Serbo-Croatian:
- Cyrillic: астроном m, звездар m, звездарица f
- Roman: astronom (sh) m, zvezdar m, zvezdarica f, zvjezdoznanac (sh) m (archaic)
- Slovak: hvezdár m, astronóm m
- Slovene: astronom (sl) m
- Sotho: molepi
- Spanish: astrónomo (es) m, astrónoma (es) f
- Swedish: astronom (sv) c
- Tagalog: dalubtala
- Thai: นักดาราศาสตร์ (nák-daa-raa-sàat)
- Turkish: gök bilimci (tr), astronom (tr)
- Ukrainian: астроном (uk) m (astronom)
- Vietnamese: nhà thiên văn học
- Volapük: (♂♀) stelavan (vo), (♂) histelavan, (♀) jistelavan
- Welsh: seronydd m, serydd m
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