Surname Yoas (Yoas 
) , worldwide, is quite a rare cognomen. The cognomen Yoas is characteristic of the Democratic Republic of the Congo, where it is quite a rare surname, Tanzania, where it is a rare surname, and the United States, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in the Democratic Republic of the Congo, the United States, and Indonesia. Much less frequently, Yoas is the forename as well as the last name.