Hideki Mitsui (三井 秀樹, Mitsui Hideki, born 1963) is a Japanese screenwriter. He has composed the script and series composition for numerous anime series.
1987: Tsuide ni Tonchinkan (script); debut series1989: Mado King Granzort (script)1989: Gaki Deka (script)1991: Jankenman (script)1992: Hana no Mahōtsukai Mary Bell (series composition)1994: Nanatsu no Umi no Tico (script)1994: Akazukin Chacha (script)1994: Mahoujin Guru Guru (script)1996: Lupin Sansei: Towairaito Gemini no Himitsu (script)1996: Meiken Lassie (script)1997: Shin! Tenchi Muyo (script)1997: Mashin Eiyūden Wataru (script)1998: Cyberteam in Akihabara (script)1999: Wild Arms: Twilight Venom (script)1999: Mirei Shōnen Conan II: Tiger Adventure (script)2000: Dokidoki? Densetsu: Mahoujin Guru Guru (script)2004: Ragnarok The Animation (series composition)2004: Fantastic Children (script)2005: Kotencotenco (series composition)2006: Magikano (series composition, script)2006: Naikaku Kenryoku Hanzai Kyōsei Torishimarikan: Zaizen Jotarō (series composition)2006: Galaxy Angel-Rune (script)2007: Master of Epic The Animation Age (script)2007: Jūsō Kikō Dancouga Nova (story construction)1996: Gekijōban: Mahōjin Guru Guru (script)1999: Taiyō no Fune: Sol Bianca (script) 
