Cognomen Yubun (Yubun 
) , throughout the world, is an extremely rare surname. The last name Yubun is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Predominantly, Yubun is the forename as well as the last name.
Ide, Onishi, Zu-Shi, Moriguchi, Shinada, Shimizu, Konishi, Yoshida, Mitsumoto, Hirata, Nakamura, Fujimoto, Ogasawara, Watanabe, Yamamoto, Yoshioka, Matsumoto, Takahashi, Narashiba, Nakayama, Nakatsuka, Kimura, Sasaki, Ito, Ono, Oki, Sato, Ando, Kato, Tani, Maeda, Suzuki, Saeki, Kondo, Ikeda, Okada, Okawa, Okubo, Ogura, Ogawa, Matsue, Kamei, and Yamashita