Last name Kaapu (Kapa 
, Kaapu 
) , worldwide, is a common family name. The last name Kaapu is habitual in Montenegro, where it is quite a common surname, Lesotho, and Papua New Guinea, where it is quite a rare surname. In absolute terms, this name is the most popular in India, South Africa, and Papua New Guinea. Also, Kaapu is the forename as well as the last name.