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)