Kazutaka Ishii is a Japanese male voice actor affiliated with the agency I'm Enterprise. He was born on August 19th in Kanagawa Prefecture, Japan. His career began in 2001, with his early work consisting of guest roles in television anime such as Galaxy Angel and Full Metal Panic? Fumoffu. Throughout the 2000s, he continued to build his portfolio by voicing a wide range of minor characters and supporting roles in numerous series, including Shuffle!, Clannad, and Toradora!.

Ishii's role as the narrator and the voice of Zhuge Liang (Kō Mei) Re-GZ in the 2010 series SD Gundam Sangokuden Brave Battle Warriors stands as one of his more prominent performances. He has also been a recurring presence in the Gundam franchise, providing voices for multiple characters in Mobile Suit Gundam AGE in 2012. His work is heavily focused on anime television series, but he has also contributed to original video animations, web animations, and video games. Notable video game credits include Sothe and Sephiran in Fire Emblem: Radiant Dawn and various characters in the Samurai Shodown series.

Beyond his primary stage name, Ishii has also worked under the alias Kazuki Kato. His career is characterized by a consistent output of supporting performances, with credits in the 2010s and 2020s including roles in Watamote, My Love Story!!, Boruto: Naruto Next Generations, and Uma Musume Pretty Derby.