| Country: | Vietnam |
| Woman Grandmaster (2005) | |
| Fideid: | 12400300 |
| Peakrating: | 2358 (January 2005) |
Nguyễn Thị Thanh An (born 17 June 1976) is a Vietnamese chess player. She holds the title of woman grandmaster.
She has qualified for the Women's World Chess Championship 2015 through a zonal tournament, losing to Antoaneta Stefanova in the first round.
She previously competed in the 2000, 2004 and 2008 world championships.
With the Vietnamese national women's team she took part in Chess Olympiads: 2000 in Istanbul, 2002 in Bled, 2004 in Calvia, 2006 in Turin, 2010 in Khanty-Mansiysk, 2016 in Baku.[1]
In 2007 and 2011 she participated in the World Team Chess Championship.[1]