Kang Yun-sŏng (Korean: 강윤성; Hanja: 康允成; 1302 – December 1358) was a Korean civil official of Goryeo dynasty.
He was the father of Queen Sindeok who was the second wife of King Taejo of Joseon or known as Yi Sŏng-gye.
Kang passed the civil service examination during the reign of King Chunghye of Goryeo.
He would later become a Hallim Academican (한림학사; 翰林學士; Hallim haksa), as well as the deputy minister of personnel (이부시랑; 吏部侍郎; ibu sirang).
[1] One of the reasons why Taejo of Joseon married his daughter was to marry into a prominent clan from the capital region since Taejo of Joseon was from a clan originally from the borderlands.