Cognomen Цуно (Tsuno 
, Chikatada , Цуно) , worldwide, is a rare last name. The cognomen Цуно is characteristic of Japan, where it is a rare surname, Brazil, where it is a very rare surname, and Canada. Measured by absolute frequency, this name is the most popular in Brazil, Japan, and the United States. Much more frequently, Цуно is the forename as well as the last name.