Family name Ntsi (Ntsi 
) , throughout the world, is quite a rare cognomen. The surname Ntsi is characteristic of Sub-Saharan Africa, particularly Lesotho, where it is quite a rare surname, Botswana, and the Democratic Republic of the Congo. Not in comparison with a country's population, this name is the most popular in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, South Africa, and Lesotho. Much less frequently, Ntsi is the forename as well as the last name.