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Last name Inong (Inang , Inong ) , in the entire world, is quite a rare cognomen. The family name Inong is habitual in South-eastern Asia, particularly Philippines, where it is quite a rare surname, Indonesia, and Thailand, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Indonesia, Philippines, and Nigeria. Likewise, Inong is the forename as well as the last name.