Trương Thanh Hằng (born 1 May 1986 in Ho Chi Minh City) is a Vietnamese track and field athlete who specialises in middle-distance running events.

Born in Ho Chi Minh City, Thanh Hang won a national title over 1500 metres in 2004 and began to represent her country internationally the following year, beginning with a sixth-place finish at the 2005 Asian Athletics Championships.

[2] Her next major competition was the 2006 Asian Games and she was knocked out in the qualifying rounds of the 800 m, but took fourth in her 1500 m speciality, improving her national mark to 4:17.66 minutes in the process.

[6] She retained her titles at the 2009 Southeast Asian Games the following month, while her male compatriot Nguyen Dinh Cuong made it a middle-distance sweep for Vietnam.

On that basis, the 2011 Southeast Asia Games was probably to serve only as a “cool down” to wrap up her busy season, before starting the build-up for the London Olympics.