Hideki Taniuchi (タニウチ ヒデキ or 谷内 秀基, Taniuchi Hideki, born November 15, 1972) is a Japanese composer and arranger from Hokkaido. He is best known for composing music for the Death Note, Real Drive, Akagi and Kaiji anime TV series. He also composed music used in the anime Aoi Bungaku and the "Heian Arc" of the anime Otogi Zoshi. In addition, he performed opening theme songs for Hajime no Ippo as a guitarist in the rock band Shocking Lemon.
On May 22, 2012, at approximately 10:45 a.m. JST, Taniuchi was arrested in the Kanagawa Prefecture on charges of marijuana possession. He was found with 1.5 grams of dried cannabis and a bong.