Globally, Kasuo (Kasuo 
) is a very rare male first name. Very seldom, Kasuo is the last name as well as the forename.
Ito, Massuda, Shimizu, Sekizawa, Barbosa, Nacamura, Ianagui, Okamoto, Yoshida, Maruyama, Motosima, Sakamoto, Tamanaha, Takebayashi, Nakayama, Nishiwaki, Fujichima, Watanabe, Yamamoto, Matsumura, Matsumoto, Sakaguchi, Yamada, Okagawa, Hayama, Tokito, Ogi, Mori, Sato, Anan, Tomo, Noda, Neto, Ueda, Sanda, Araki, Kashiyama, Asano, Filho, Otuka, Matsuo, Mendes, Miyake, Sasaki, Kakeya, Garcia, Junior, Tanaka, Honda, and Hiratsuka