Last name オング (オング 
, Ongg 
) , in all the world, is a rare family name. The cognomen オング is habitual in South-eastern Asia, particularly Singapore, where it is a rare surname, Myanmar, where it is a very rare surname, and Indonesia. In absolute terms, it is the most numerous in Indonesia, Japan, and Myanmar. Much less frequently, オング is the forename as well as the last name.