Surname Kaeu (Kaeu 
) , throughout the world, is a very rare family name. The cognomen Kaeu is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname, Cambodia, and Thailand, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Malaysia, India, and Cambodia. Likewise, Kaeu is the forename as well as the last name.