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).

After the Second World War, Sekigawa debuted as co-director of the pro-unionist Those Who Make Tomorrow (1946) which was intended to illustrate the purpose of the workers' union at the Toho film studios.

[1][2] Having difficulties finding work due to his political leanings, he directed the anti-war film Listen to the Voices of the Sea for Mitsuo Makino's Toyoko Eiga company (later Toei Company).

[3] In later years, Sekigawa's output included both audience-orientated genre works and documentaries.