Family name Тадаюки (Tadayuki 
, Тадаюки 
, Honnda 
) , all over the world, is a rare last name. The cognomen Тадаюки is characteristic of Japan, where it is a rare surname, Singapore, where it is a very rare surname, and China, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Japan, China, and India. Very seldom, Тадаюки is the forename as well as the last name.