- Armenian: ազդարար (hy) (azdarar)
- Bashkir: ошаҡсы (oşaqsı)
- Chinese:
- Mandarin: 告密者 (zh) (gàomìzhě), 舉報人/举报人 (jǔbàorén), 告發者/告发者 (gàofāzhě), 檢舉者/检举者 (jiǎnjǔzhě)
- Czech: informátor (cs) m
- Danish: whistleblower c
- Dutch: klokkenluider (nl) m
- Finnish: ilmiantaja (fi)
- French: lanceur d’alerte (fr) m, lanceuse d’alerte (fr) f, dénonciateur (fr) m, dénonciatrice (fr) f
- Galician: malsín m, chileta m, lengoreteiro m
- Georgian: ინფორმატორი (inpormaṭori), დამსმენი (damsmeni), მომხსენებელი (momxsenebeli)
- German: Whistleblower (de) m, Hinweisgeber (de) m, Hinweisgeberin (de) f, Enthüller m, Skandalaufdecker m
- Hungarian: informátor (hu)
- Icelandic: uppljóstrari m
- Indonesian: pengungkap aib
- Irish: sceithire m
- Italian: informatore (it) m
- Japanese: 内部告発者 (ないぶこくはつしゃ, naibukokuhatsusha)
- Korean: 내부고발자 (naebugobalja)
- Macedonian: свиркач m (svirkač)
- Norwegian: fløyteblåser m, varsler (no) m
- Polish: sygnalista (pl) m
- Portuguese: delator (pt)
- Russian: осведоми́тель (ru) m (osvedomítelʹ), осведоми́тельница (ru) f (osvedomítelʹnica), информа́тор (ru) m (informátor), (disparaging) доно́счик (ru) m (donósčik), доно́счица (ru) f (donósčica)
- Serbo-Croatian:
- Cyrillic: звиждач m
- Roman: zviždač (sh) m
- Spanish: revelador de secretos, delator (es) en su trabajo, alertador m, denunciante m or f, alcaucil (es) m, propalador (es) m, pregonante m or f
- Swedish: visselblåsare (sv) c
- Turkish: muhbir (tr)
- Ukrainian: інформа́тор m (informátor), інформа́торка f (informátorka)
- Vietnamese: người thổi còi, người tố cáo, người tố giác
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