Ong or ONG may refer to:
Arts and media Ong's Hat, a collaborative work of fiction “Ong Ong”, a song by Blur from the album The Magic Whip
Places Ong, Nebraska, US, city Ong's Hat, New Jersey, US, ghost town Ong River, Odisha, India Mornington Island Airport, IATA airport code "ONG"
Other uses Ong (surname), a surname (especially a Chinese one) Ong language of Laos and Vietnam ONE Gas (Oklahoma Natural Gas), a component of ONEOK, Inc. Non-governmental organization, abbreviated ONG in French, Italian, Spanish, Romanian and Portuguese (NGO in English) Ipomoea aquatica or Ong choi, a semi-aquatic tropical plant grown as a leaf vegetable Ong (Washoe folklore), a bird-like mythical creature
See also Battle of Ong Thanh, Vietnam (1967)