Kang Ding () or Geng Ding () was a king of the Shang dynasty of China His given name is Xiao (). He got his throne in the year of Jiawu () and his capital was at Yin ().
Different sources suggest different reign lengths for Geng Ding. The Bamboo Annals suggest an 8-year reign. On the other hand, the Song dynasty ' (A supplement to the Zizhi Tongjian) and Tongzhi Encyclopedia suggest a 6-year reign. The Diwang Benji () quoted in Tongzhi suggests a 11-year reign.