Tomonoura, formerly known as Tomonotsu, is a port in the Tomo ward of Fukuyama, Hiroshima Prefecture, Japan. It stands on the southern point of the Numakuma Peninsula, 14 kilometers south of Fukuyama Station, with a population of about half a million people as of 2017. Tomonoura has been a prosperous port since ancient times. Its unique circular harbor was preserved even after modern port facilities were introduced.