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