Cognomen Rikudō (كوشي 
, Rikudō, Рикудо) , in the entire world, is quite a rare last name. The surname Rikudō is characteristic of Libya, where it is quite a rare surname, Sudan, and Iraq. Measured by absolute frequency, the name is most common in Egypt, Sudan, and Iraq. Likewise, Rikudō is the forename as well as the last name.