Hitomi Shimizu (冷水ひとみ) is a keyboardist and composer of live action films, television programs, animated shorts and videogames.
She is part of a musical duo with violinist Hiromi Nishida called Syzygys.
She was the composer of the television series Gakkou no Kaidan (School Ghost Story) with Gary Ashiya.
In 2008, Shimizu was the sole composer of the PlayStation 3 sequel Siren: Blood Curse.
The new title features an arrangement of the Siren main theme played on an Ondes Martenot by musician Wakana Ichihashi.