Priscelia Chan Shih Mei, also known as Zeng Shimei, is a Singaporean television actress and host.

Chan was a tax auditor before taking part in Star Search Singapore 1999. Despite being eliminated in the semifinals, she was offered a contract by TCS (later MediaCorp). She was initially cast in supporting roles in several Chinese-language television dramas produced by MediaCorp Channel 8, and made her debut as a lead actress in In Pursuit of Peace (2001) and Heartlanders III (2003). She acted in the mainland Chinese supernatural-fantasy television series The Legend and the Hero (2006). The series was aired on Channel 8 in 2009. She did not act in as many dramas in 2009 as she took several months off to finish her degree at SIM-RMIT.

Apart from acting, Chan has also performed songs for albums released by MediaCorp, with the latest being the MediaCorp 25th Anniversary Soundtrack Album. Chan also worked as a model for two television commercials for Fujifilm and Goldheart Jewellery in 2006 and 2007 respectively.

Chan was nominated as one of the Top 20 Most Popular Female Artistes in the Star Awards in 2003, 2004, 2006, 2007 and 2010.

Chan's performance as a villain in the 2013 mega-blockbuster The Voyage: A Journey was much lauded by industry professionals and audience members alike. This led to her clinching the coveted Rocket Award at the annual Star Awards, which is awarded to the MediaCorp artiste who has made the most breakthrough in the preceding year.