Last name Кеиго (Keigo 
, Кеиго 
) , in all the world, is a rare cognomen. The cognomen Кеиго is habitual in Taiwan, where it is a rare surname, Japan, and Singapore, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Asia, particularly Japan, China, and Taiwan. Likewise, Кеиго is the forename as well as the last name.