Sima Tan

Sima Tan
司馬談
Born165 BCE
Longmen, Han dynasty
(now Hejin, Shanxi)
Died110 BCE (aged 55)
Occupation(s)Astrologist, astronomer, historian
RelativesSima Xi (father)
Sima Qian (son)

Sima Tan (traditional Chinese: 司馬談; simplified Chinese: 司马谈; pinyin: Sīmǎ Tán; Wade–Giles: Ssu-ma T'an; c. 165–110 BCE) was a Chinese astrologist, astronomer, and historian during the Western Han dynasty. His work Records of the Grand Historian was completed by his son Sima Qian, who is considered the founder of Chinese historiography.