Family name Insu (Insu 
, Инсу 
, ไม่) , in all the world, is a rare last name. The family name Insu is habitual in Belgium, where it is a rare surname, Thailand, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Thailand, China, and Belgium. More prevalently, Insu is the forename as well as the last name.