Surname Yosinaga (ヨシナガ 
, Yosinaga 
) , all over the world, is a rare family name. The last name Yosinaga is characteristic of Japan, where it is a rare surname, Indonesia, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Japan, Indonesia, and Brazil. Much more frequently, Yosinaga is the forename as well as the last name.