Wang Jiayin, born on September 6, 1996, in Zhoushan, Zhejiang Province, is a female actress and singer from Mainland China. In August 2016, she debuted as a member of the female singing group Diamond Girls on the inspirational growth program Go! Beauties on DRAGON TV. In November 2017, the youth campus drama ART ON! Art Students! in which she participated, began filming. In July 2018, she appeared in the historical romance sweet drama The Ugly Concubine Arrives. In July 2019, she starred in the martial arts sitcom Young Jianghu Story. In June 2020, she played a leading role in the urban romance drama No Matter What the Boss Says. In February 2022, the historical romance drama The Autumn Ballad in which she participated, was broadcast. In September 2023, the fantasy romance drama Destiny in Dreams in which she participated, aired. In March 2024, the suspense romance sitcom Guess Who I Am, in which she played a leading role, was broadcast. On September 19, 2025, the short drama Detective Tang: The Golden Age Youth in which she participated, was released.