Sayo (written: 沙世, 沙代 or 紗世) is a feminine Japanese given name. Notable people with the name include:
, Japanese model and television personality , Japanese fashion model , Japanese long-distance runner , Japanese handball player , Japanese anime director , founder of the Tenshō Kōtai Jingūkyō
Fictional characters , a character in the manga series Negima! , a character in the manga series Double-J , a character in the manga series Triage X , a character in the media franchise BanG Dream! , a character in the manga series A.I. Love You , a character in the OVA series One Off , a character in the manga series Gals! Sayo Oharu (大治 小夜), a character in the tokusatsu series Mashin Sentai Kiramager , a character in the manga series My Girlfriend is Shobitch , a character in the manga series Recorder and Randsell , a character in the manga series Sora no Manimani , a character in the visual novel Umineko When They Cry , a character in the video game Shikigami no Shiro , a character in the online game and anime series "Touken Ranbu"