There are 3 places named Iwamoto in Japan.
All places in the world called "Iwamoto".
Ono (18)
Ota (17)
Hongo (16)
Wada (15)
Minato (15)
Tomari (14)
Kawasaki (14)
Hama (14)
Ohama (14)
Nakamura (13)
Hara (13)
Nagahama (13)
Oshima (13)
Yoshida (12)
Okubo (12)
Sakai (12)
Kanayama (11)
Hirose (11)
Funakoshi (11)
Kawaguchi (11)
Shinden (11)
Seto (11)
Okawa (11)
Shimizu (10)
Takada (10)
Yamada (10)
Ogawa (10)
Ohara (10)
Nakayama (10)
Takata (10)