UFO (Unidentified Flying Object)

UFO Sightings Chart, c. 1969 (National Archives UK)

UFO (abbreviation, Unidentified Flying Object) is the most commonly used term in English for aerial phenomenon of unknown origin.

Foreign Terminology

UFO

• German: Unbekanntes Flugobjekt
• Danish: Uidentificeret Flyvende Objekt

OVNI

• French: Objet Volant Non-Identifié
• Italian: Oggetto Volante Non Identificato
• Spanish: Objeto Volador No Identificado
• Portuguese: Objecto Voador Não Identificado

OVV

• Dutch: Ongeïdentificeerd Vliegend Voorwerp

НЛО

• Russian: Неопо́знанный Лета́ющий Объе́кт