Kazuya Nakai (中井 和哉, Nakai Kazuya, born November 25, 1967) is a Japanese seiyū who was born in Hyōgo-ku, Kobe. He is currently attached to Aoni Production. He debuted in After War Gundam X as Witz Sou and is best known as Zoro from One Piece, Hijikata from Gintama, Mugen from Samurai Champloo, Date Masamune from Sengoku Basara and Ultraman Max in Ultraman Max (voice only).
Many of Kazuya’s characters have rowdy personalities. In contrast, he played those who are modest and calm. In addition, many of them are swordsmen (Zoro, Date Masamune, Mugen and Hijikata).
In the Sekirei Drama CD he voices Seo Kaoru.