Hideo Sekigawa (関 川 秀雄, Sekigawa Hideo; 1 December 1908 – 16 December 1977) was a Japanese film director known mainly for films with a left-wing agenda made in the late 1940s and early 1950s. His most noted works are the anti-war films Listen to the Voices of the Sea (1950) and Hiroshima (1953).
Source: “Hideo Sekigawa”, English Wikipedia (CC BY-SA 4.0), excerpt