Family name Hiroichi (Hiroichi 
) , in the world, is a rare last name. The family name Hiroichi is habitual in Taiwan, where it is a rare surname, Japan, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Asia, particularly Taiwan, Japan, and China. More frequently, Hiroichi is the forename as well as the last name.
Ito, Shibata, Koizumi, Hishida, Fujioka, Yoshida, Ueshima, Sakazaki, Kawahira, Kitamoto, Kitagawa, Taninaga, Takekawa, Tominaga, Tsukayama, Nakamura, Shimizu, Yamamoto, Uehara, Omachi, Sato, Suwa, Ando, Baba, Koza, Koba, Unno, Ozaki, Junior, Tanaka, Nakano, Echizen, Hamada, Fujita, Ibanez, Ugajin, and Kaneshima