Family name ちか (Chika 
, ちか) , throughout the world, is a widespread cognomen. The family name ちか is characteristic of Sub-Saharan Africa, particularly Nigeria, where it is a common surname, Namibia, where it is quite a common surname, and Botswana. Not in comparison with a country's population, this name is the most popular in Nigeria, Indonesia, and Algeria. Also, ちか is the forename as well as the last name.