Gu Wengen (Chinese: 顾文根; born November 1946) is a retired vice-admiral (zhong jiang) of the People's Liberation Army Navy (PLAN) of China.

Gu Wengen was born in November 1946 in Nanhui, Shanghai, and enlisted in the PLAN in 1965.

[1] Gu spent most of his career in the PLAN's East Sea Fleet, rising to deputy chief of staff, and then deputy commander in 1996.

In July 2004, he was promoted to commander of the South Sea Fleet and concurrently deputy commander of the Guangzhou Military Region,[1] succeeding Wu Shengli.

[2] He was promoted to vice-admiral in July 2005, and appointed deputy commander of the PLA Navy in January 2008.