Sonoko Chiba (千葉 園子, Chiba Sonoko, born June 15, 1993) is a Japanese footballer who plays as a midfielder.

She plays for AS Harima Albion and has previously been part of the Japan national team.

Chiba was born in Osaka on June 15, 1993.

On June 2, 2016, Chiba debuted for Japan national team against United States.

This biographical article related to women's association football in Japan is a stub.