Zhang Ruoxu (Chinese: 張若虛;  ca. 660 – ca. 720) was a Chinese poet of the early Tang dynasty from Yangzhou in modern Jiangsu province. He is best known for "Spring River in the Flower Moon Night" (Chun Jiang Hua Yue Ye, 春江花月夜), one of the most unique and influential Tang poems, which has inspired numerous later artworks.