Lang Yinglai (born 22 August 1979) is a female Chinese former middle distance runner.

On 18 October 1997 at the 1997 National Games of China in Shanghai she ran the 1500 metres in 3:51.34 minutes, taking the silver medal behind Jiang Bo. This time ranks her as the fourth fastest in the world of all time, only behind Genzebe Dibaba, Qu Yunxia and Jiang.^[1] This is also the world record for junior athletes.^[2] Four days later she won the 800 metres title at the National Games in 1:57.62.^[3] She took an 800 m and 1500 m double at the 1997 Asian Junior Athletics Championships.^[4]

Lang never had a distinguished career after this, rarely competing internationally.