Yoshii () may refer to:
Places Yoshii, Fukuoka, a former town in Fukuoka Prefecture Yoshii, Gunma, a former town in Gunma Prefecture Yoshii, Nagasaki, a former town in Nagasaki Prefecture Yoshii, Okayama (Akaiwa) (吉井町), a former town in Akaiwa District, Okayama Prefecture Yoshii, Okayama (Shitsuki) (芳井町), a former town in Shitsuki District, Okayama Prefecture
Other uses Yoshii (surname)