- Albanian: semafor (sq) m
- Arabic: إِشَارَة اَلْمُرُور f (ʾišārat al-murūr), إِشَارَة ضَوْئِيَّة f (ʾišāra ḍawʾiyya)
- Armenian: լուսացույց (hy) (lusacʿuycʿ), լուսաֆոր (hy) (lusafor), լուսազդանիշ (hy) (lusazdaniš), լուսազդանշան (hy) (lusazdanšan), լուսակիր (hy) (lusakir)
- Asturian: semáforu m
- Azeri: işıqfor
- Bashkir: светофор (svetofor)
- Belarusian: святлафо́р m (svjatlafór)
- Bengali: সিগনাল (signal)
- Bulgarian: светофа́р (bg) m (svetofár)
- Burmese: ယာဉ်အသွားအလာအလင်း (yanya.swa:a.laa.lang:), အသွားအလာအလင်း (a.swa:a.laa.lang:)
- Catalan: semàfor (ca) m
- Chinese:
- Cantonese: 紅綠燈, 红绿灯 (hung4 luk6 dang1)
- Mandarin: 紅綠燈 (zh), 红绿灯 (zh) (hónglǜdēng), 信號燈 (zh), 信号灯 (zh) (xìnhàodēng)
- Czech: semafor m, světelné signalizační zařízení n
- Danish: lyssignal, lyskurv
- Dutch: verkeerslicht (nl) n, stoplicht (nl) n
- Elfdalian: trafikliuos
- Esperanto: trafiklumoj, semaforo
- Estonian: valgusfoor
- Faroese: ferðsluljós n
- Finnish: liikennevalot (fi) pl
- French: feu (fr) m, feux de circulation (fr) m pl
- Galician: semáforo m
- Georgian: შუქნიშანი (šuknišani)
- German: Ampel (de) f, Verkehrsampel (de) f; (Namibia, South Africa (KwaZulu-Natal)) Robot (de) m
- Greek: φανάρι (el) n (fanári)
- Hebrew: רַמְזוֹר (he) m (ramzór)
- Hindi: यातायात बत्ती (yātāyāt battī), ट्रैफ़िक लाइट (ṭraifik lāiṭ)
- Hungarian: jelzőlámpa (hu), közlekedési lámpa (hu)
- Icelandic: umferðarljós (is)
- Indonesian: lampu lalu lintas (id)
- Irish: solas tráchta m
- Italian: semaforo (it) m
- Japanese: 交通信号 (こうつうしんごう, kōtsū shingō), 信号 (ja) (しんごう, shingō), ゴーストップ (gōsutoppu), 信号機 (ja) (しんごうき, shingōki)
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- Norman: veue d'trafi f
- Kazakh: бағдаршам (bağdarşam)
- Khmer: ពន្លឺចរាចរណ៍ (pʊənlɨɨ cɑraacɑɑ)
- Korean: 신호등 (ko) (sinhodeung)
- Kyrgyz: белгишам (belgişam), светофор (svetofor)
- Lao: ໄຟສັນຍານຈໍລະຈອນ (lo) (fai san nyān chǭ la chǭn), ໄຟຈະລາຈອນ (fai cha lā chǭn)
- Latvian: luksofors m, svetofors m (dated)
- Lithuanian: šviesoforas m
- Macedonian: семафо́р m (semafór)
- Malay: lampu isyarat, lampu trafik
- Maltese: dawl tat-traffiku m
- Mongolian: замын гэрэл (zamyn gerel), дохионы гэрэл (dohiony gerel)
- Norwegian:
- Bokmål: trafikklys (no) n
- Persian: چراغ راهنمایی (fa) (čerâğ-e râhnamâyi)
- Polish: sygnalizacja świetlna f
- Portuguese: semáforo (pt), sinal de trânsito, sinal (pt), farol (pt) m
- Romanian: semafor (ro) n
- Russian: светофо́р (ru) m (svetofór)
- Rusyn: семафо́р m (semafór)
- Serbo-Croatian:
- Cyrillic: се̏мафо̄р m, светлоказ m
- Roman: sȅmafōr (sh) m, svetlokaz
- Slovak: semafor m
- Slovene: semafor (sl) m
- Spanish: semáforo (es) m
- Swedish: trafikljus (sv), trafiksignal c
- Tajik: чароғи раҳнамо (čaroġi rahnamo), светофор (svetofor)
- Thai: สัญญาณไฟจราจร (sǎn-yaan-fai-jà-raa-jɔɔn), ไฟจราจร (fai-jà-raa-jɔɔn)
- Turkish: trafik ışığı
- Turkmen: swetofor
- Ukrainian: світлофо́р m (svitlofór)
- Uzbek: svetofor (uz)
- Vietnamese: đèn giao thông, đèn hiệu, đèn hiệu giao thông
- Yiddish: פֿאָרסיגנאַל (forsignal)
- Zulu:
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