Cao Zhen (; born January 8, 1987, in Shandong) is a Chinese table tennis player.

Career records Singles (as of May 13, 2011) World Championships: round of 16 (2005) Pro Tour winner (5): Malaysia Open 2003; China (Wuxi) Open 2004; German, Swedish Open 2005; Slovenian Open 2009. Runner-up (2): Austrian Open 2004; German Open 2007.

Women's doubles World Championships: QF (2009) Pro Tour winner (5): Malaysia Open 2003; China (Wuxi), Austrian Open 2004; Japan Open 2005; Slovenian Open 2009. Runner-up (2): Danish, China (Tianjin) Open 2009.

Mixed doubles World Championships: winner (2009, 11); SF (2005, 07)

References