Yuán Kèdìng (Chinese: 袁克定; 1878–1958), courtesy name Yuntai (云台), was the eldest son of Yuan Shikai. His mother was Yuan's first wife, Yu (于氏), and Yuan Kewen was his younger brother. In his childhood, Yuan followed his father to many places when he served in various positions in the Qing dynasty. He studied in Germany and spoke fluent German and English. At the end of the Qing dynasty, he served as a low-ranking official in the government. After the Xinhai Revolution, under the instruction of his father, Yuan became a close friend of Wang Jingwei. According to the History of Xinhai Revolution, Yuan and Wang swore to be "brothers of different surnames" in front of Yuan Shikai.