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