- First Name: Yudai
- Family Name: Chiba
- Native name: 千葉雄大
- Also Known as: ちば ゆうだい
- Nationality: Japanese
- Gender: Male
- Born: March 9, 1989
Chiba Yudai is a Japanese actor and fashion model. His career first kicked off when he starred as Alata in Tensou Sentai Goseiger, the 34th installment of the famous tokusatsu series Super Sentai. After this his next major role was playing Mitsukuni Haninozuka in the live adaptation of Ouran High School Host Club. Since his breakout success he has starred in a variety of dramas, comedies and romances on TV and Film. He is currently set to star as Okuyama in the live film adaptation of Ajin: Demi - Human as well as Mitsuko Inaba in the highly anticipated Final Fantasy XIV: Daddy of Light which will be distributed internationally by Netflix.