Zhenqi Barthel (Chinese: 孙祯琦; pinyin: Sūn Zhènqǐ; née Sun Zhenqi; born 9 January 1987) is a German table tennis player of Chinese origin. In 2002, she moved to Essen, Germany, where she became a resident athlete of TuS Holsterhausen, and trained for the table tennis team, under her personal coaches Jörg Bitzigeio and Wang Zhi. Three years later, she was adopted by the couple Barthel, changed her surname, and obtained a German citizenship. As of March 2013, Barthel is ranked no. 66 in the world by the International Table Tennis Federation (ITTF). She is also right-handed, and uses the shakehand grip.