Across the world, Тецу (Tetsu 
, Tecu 
, Тецу 
) is a rare predominantly boy's, but scarcely female first name. The first name Тецу is characteristic of Japan, where it is a rare masculine name, Romania, where it is a rare girly name, and Indonesia, where it is a very rare boy's name. Not in comparison with a country's population, the name is most common in Japan, Indonesia, and China. Very seldom, Тецу is the last name as well as the forename.