Wei Christianson (née Sun; born August 21, 1956) is a Chinese-American businesswoman and lawyer, former CEO of Morgan Stanley's China operations and Co-CEO of its Asia Pacific division.

Wei Sun Christianson was born on 21 August 1956 to a People's Liberation Army officer father and doctor mother as part of the Frontier Generation from China's Cultural Revolution.

[2] She took the Gao Kao in 1978 and was accepted by the Beijing Language and Culture University, with the intention of learning English and working as a translator for the Ministry of Foreign Affairs.

[4] Christianson joined Morgan Stanley in 1998, where she was an executive director, Beijing chief representative, and a senior team member of its Resources, Power and Transportation Group, where she met her mentor John Mack.

[7][8] Christianson has led initial public offerings of Sinopec, China Life and SMIC, and oversaw the $4.2 billion acquisition of Gas Kazakhstan by CNPC.