Song Chun-gil (Korean:송준길;Hanja:宋浚吉; 28 December 1606 – 2 December 1672), also known by his art nameTongch'undang, was a Korean politician and Neo-Confucian scholar, who lived during the Joseon period.
Song Chun-gil's descendants through his second daughter had made him the maternal grandfather of Min Jin-hu, Min Jin-won, and Queen Inhyeon. He eventually became the 5th great-grandfather of Empress Myeongseong and the 6th great-grandfather of Empress Sunmyeong.
When Empress Myeongseong became Queen, she also close connections to the families of her 5th maternal great-grandmother (Eunjin Song clan), and 4th maternal great-grandmother (Jinju Jeong clan).
