Surname まりこ (Mariko 
, まりこ) , worldwide, is a common cognomen. The cognomen まりこ is habitual in Sub-Saharan Africa, particularly Mali, where it is quite a common surname, Equatorial Guinea, where it is quite a rare surname, and Gabon. Measured by absolute frequency, it is the most numerous in Mali, Ivory Coast, and Algeria. Also, まりこ is the forename as well as the last name.