Tsien
Tsien is a family name for the following people:
- Andrew Tsien Chih-ch'un (1926–2009), Chinese clergyman, Bishop of Hualien
- Roger Tsien (1952–2016), American cell biologist
- for Hsue-shen Tsien see Qian Xuesen , he was known as Tsien when he was a professor at Caltech