Surname Keiyu (Keiyu 
) , in the entire world, is a rare cognomen. The surname Keiyu is habitual in Eastern Asia, particularly Japan, where it is a rare surname, and China, where it is an extremely rare surname. More prevalently, Keiyu is the forename as well as the last name.
Lam, Tanaka, Tomita, Hamada, Hirata, Fujita, Oshima, Ohshida, Sakurai, Kojima, Shimizu, Akiyama, Matsumae, Takenaka, Nakamura, Nakagawa, Nakajima, Yamauchi, Matsumoto, Shibata, Komori, Kawara, Kawano, Ito, Ota, Mori, Chan, Kato, Hase, Fujii, Inoue, Ishii, Ikeda, Onuki, Okada, Ogura, Ohara, Morita, Miyagi, Sakata, Suzuki, Kaneko, Kobayashi, and Nishimura