Yu Shinan (558–638), courtesy name Boshi, posthumously known as Duke Wenyi of Yongxing, was a Chinese calligrapher and politician who lived in the early Tang dynasty and rose to prominence during the reign of Emperor Taizong. His uncle, Yu Ji (虞寄), also served in the Tang imperial court as an Imperial Secretary. He is regarded as one of the four greatest calligraphers in the early Tang dynasty along with Ouyang Xun, Chu Suiliang and Xue Ji, and one of the more famous ones in the history of Chinese calligraphy. Emperor Taizong once mentioned that Yu Shinan was "a man of five absolute merits".

Yu Shinan 虞世南
Born	558 Yuyao, Zhejiang
Died	638 (aged 79–80)
Other names	Boshi (伯施) Duke Wenyi of Yongxing (永興文懿公)
Occupation(s)	Calligrapher, politician
Children	Yu Xu Yu Xiuyao one other daughter
Parent	Yu Li (father)
Relatives	Yu Ji (uncle) Yu Shiji (brother)