Adachi may refer to:
People Adachi (surname) Adachi clan, a family of samurai Adachi Ginkō, 19th-century Japanese artist Tohru Adachi, a fictional character from Persona 4
Places Adachi, Tokyo, a special ward of Tokyo, Japan Adachi District, Fukushima, Japan Adachi, Fukushima, a town in Adachi District, Fukushima Prefecture
See also "Adachi-ga Hara", the title of the first issue in the 1970s Lion Books manga series as well as the fifth episode of the anime adaptation The noh play Kurozuka also known in kabuki as "Ōshū Adachigahara" (奥州安達原)