Liu Cheng (; born 4 January 1992) is a Chinese badminton player. He was the men's doubles World Champion in 2017 partnered with Zhang Nan, also the mixed doubles World and Asian Junior Champion in 2010 with Bao Yixin. Liu was part of the national team member that won the team events at the 2015 Sudirman Cup, 2018 Thomas Cup and 2018 Asian Games. He reached a career high of world number 2 in both men's and mixed doubles events.