Ii Kinniku is a Japanese voice actor primarily known for his work in adult computer games and anime. He is the stage name used by voice actor Haruki Ishiya for roles in mature-rated productions. Ishiya was born on January 14, 1992, and is affiliated with the talent agency Osawa Office.

His career in the industry is marked by a significant number of roles in adult games, often referred to as bishōjo games or eroge. Under the name Ii Kinniku, he has voiced characters in numerous titles. Some of his notable game credits include the role of Avaro Rukureru in Tenkuji Castle Meister, Rabbitō Satoshi in Sakura, Moyo., and Kyō Shirosuke in Secret Agent. He has also contributed to games such as Slow Damage and Hoshi Koi * Twinkle.

In addition to video games, Ii Kinniku has performed in anime produced for adult audiences. He is credited with voicing the character Yūki Izumi in the premium or complete version of the anime series Fire in His Fingertips -My Childhood Friend is a Fireman- and its sequel, Fire in His Fingertips 2 -My Boyfriend is a Fireman-. This type of role, where different voice actors are used for the broadcast and the more explicit "complete version," is a common practice for such series.

Beyond his work under the Ii Kinniku pseudonym, his primary identity Haruki Ishiya has a broader career in mainstream anime and has received industry recognition, including winning a singing award at the 13th Voice Actor Awards in 2019 for his participation in the Hypnosis Mic project. However, information on recurring collaborations or other major achievements specifically under the Ii Kinniku name remains sparse.