Nakai may refer to:
People Nakai (surname) In botany, an abbreviation for author Takenoshin Nakai
Places Nakai, Kanagawa, Japan Nakai District, Laos Nakai Misl, former principality of the Punjab Region
Others Nakai (Japanese vocation) Nakai, a captive orca Nakai, a Lizardman in the Warhammer game Nakai, a race in the Stargate Universe Nakai language, an Ok language of Indonesia