Cognomen もとこ (Motoko 
, もとこ) , in the entire world, is quite a common surname. The last name もとこ is characteristic of Sub-Saharan Africa, particularly Lesotho, where it is quite a common surname, the Democratic Republic of the Congo, where it is quite a rare surname, and Botswana. Not in comparison with a country's population, it is the most numerous in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, Lesotho, and South Africa. More frequently, もとこ is the forename as well as the last name.