Surname Kahei (Kahei 
) , in all the world, is a rare cognomen. The family name Kahei is characteristic of Eastern Asia, particularly Taiwan, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Japan, where it is a very rare surname. More frequently, Kahei is the forename as well as the last name.
Li, Wong, Saito, Cheng, Leung, Yeung, Sasaki, Suzuki, Cheung, Tanaka, Tamura, Ishida, Yamada, Shimizu, Yoshida, Nakamura, Nakajima, Watanabe, Yamamoto, Kobayashi, Takahashi, Hashimoto, Fong, Goto, Kwok, Kato, Lo, Ng, Ho, Wu, Siu, Lau, Lam, Lai, Law, Lee, Yamaguchi, Lui, Tse, Ito, Oya, Wan, Yip, Sato, Shum, Chan, Chau, Chow, Tam, and Stephenson