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Last name Kaoru (馨 , Kaoru , カオル ) , all around the world, is a widespread family name. The surname Kaoru is characteristic of Japan, where it is quite a common surname, China, where it is quite a rare surname, and Bulgaria, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Japan, China, and Indonesia. Likewise, Kaoru is the forename as well as the last name.
Abe, Harada, Fujita, Yamada, Shimizu, Kikuchi, Hayashi, Yoshida, Murakami, Sakamoto, Nakamura, Nakajima, Hasegawa, Fujiwara, Ishikawa, Watanabe, Yamamoto, Yamazaki, Matsumoto, Kobayashi, Takahashi, Hashimoto, Tanaka, Kimura, Suzuki, Sasaki, Ito, Ono, Ota, Mori, Sato, Arai, Aoki, Kato, Goto, Endo, Yamashita, Wada, Maeda, Saito, Sakai, Kondo, Fujii, Inoue, Ishii, Ikeda, Okada, Ogawa, Ueda, and Yamaguchi