Cognomen Kunpei (Kunpei 
) , in all the world, is a very rare surname. The family name Kunpei is habitual in Eastern Asia, particularly Japan, where it is a very rare surname. Much more frequently, Kunpei is the forename as well as the last name.
Li, Takagi, Oshima, Yamaki, Hayashi, Yoshida, Sugimoto, Tanaka, Kawamoto, Ishikawa, Watanabe, Yamamoto, Matsumoto, Takahashi, Yamanishi, Nakamura, Yamashita, Adachi, Murata, Ye, Shi, Ito, Ota, Wei, Sato, Suzuki, Kato, Yang, Asari, Kondo, Kinjo, Jiang, Ogawa, Peng, and Shigematsu