Haruhiko Arai (荒井 晴彦, Arai Haruhiko, born 1947) is a Japanese screenwriter.

[1] He is also a publisher and an editor of the Eiga Geijutsu magazine[2] and a professor of the Japan Institute of the Moving Image.

[4] He wrote the screenplay for Junji Sakamoto's KT (2001),[5] and also penned the screenplays for Ryuichi Hiroki's films Vibrator (2003) and It's Only Talk (2005).

[6][7] In 2013, he wrote the scripts for Junichi Inoue's A Woman and War and Shinji Aoyama's The Backwater.

[8][9] His published but unfilmed scenario, Divine Comedy (神聖喜劇, Shinsei kigeki), has been called lesescenario by figures such as the director Shinichiro Sawai.