There is one place named Ou in Japan.
All places in the world called "Ou".
Ono (18)
Ota (17)
Hongo (16)
Minato (15)
Wada (15)
Ohama (14)
Tomari (14)
Kawasaki (14)
Hama (14)
Nakamura (13)
Oshima (13)
Hara (13)
Nagahama (13)
Sakai (12)
Yoshida (12)
Okubo (12)
Kawaguchi (11)
Funakoshi (11)
Shinden (11)
Seto (11)
Okawa (11)
Kanayama (11)
Hirose (11)
Takata (10)
Oura (10)
Otani (10)
Shirahama (10)
Ichiba (10)
Ikeda (10)
Kamo (10)