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Globally, Kosan (Kosan , Косан , โกศัลย์ ) is a rare epicene first name. The first name Kosan is characteristic of Azerbaijan, where it is quite a rare masculine name, Albania, where it is a rare male name, and Kazakhstan. Measured by absolute frequency, it most frequently occurs in India, Indonesia, and Thailand. Much less frequently, Kosan is the last name as well as the forename.
Oo, Shibata, Hayashi, Ichikawa, Okamoto, Yoshida, Sakamoto, Takeuchi, Nakamura, Nakagawa, Nakajima, Hasegawa, Fujiwara, Ishikawa, Watanabe, Yamamoto, Yamazaki, Yokoyama, Matsumoto, Kobayashi, Takahashi, Hashimoto, Shimizu, Yamashita, Shimada, Otsuka, Abe, Koh, Ito, Ono, Yap, Sato, Arai, Kato, Endo, Saito, Asano, Kondo, Fujii, Inoue, Ishii, Sasaki, Suzuki, Kojima, Pidpong, Tanaka, Fujita, Yamada, and Yamaguchi