Cognomen Тацуо (Tatsuo 
, Ogose 
, Тацуо 
) , around the globe, is quite a common surname. The last name Тацуо is characteristic of Eastern Asia, particularly Japan, where it is quite a rare surname, Taiwan, and Hong Kong, where it is a rare surname. In absolute terms, this name is the most popular in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, Тацуо is the forename as well as the last name.