Yoshiko could refer to:
- Ide Yoshiko, daughter to Ide Daimyo Ide Tadaji.
- Isawa Yoshiko, the shugenja.
- Kuni Yoshiko, the renowned bushi who fought during the Siege of Shiro Kuni.
- Seppun Yoshiko, the sensei.
- Shinjo Yoshiko, the daughter of Shinjo Yoshifusa