Cognomen オバマ (Barack 
, Obama 
, オバマ 
) , in the world, is a common surname. The cognomen オバマ is characteristic of Sub-Saharan Africa, particularly Equatorial Guinea, where it is a common surname, Cameroon, where it is quite a common surname, and Gabon, where it is quite a rare surname. In absolute terms, this name is the most popular in Sub-Saharan Africa, particularly Cameroon, Equatorial Guinea, and Kenya. Also, オバマ is the forename as well as the last name.