Queen Danui (Korean: 단의왕후; Hanja: 端懿王后, 11 July 1686 – 8 March 1718), of the Cheongsong Sim clan, was the first wife and princess consort of Crown Prince Hwiso, the future Gyeongjong of Joseon.
The future Queen Danui was born on 11 July 1686 from the Cheongsong Sim clan as the eldest child and daughter of Sim Ho and his wife, Lady Park of the Goryeong Park clan.
Through her father, Lady Sim was the 4th great-grandniece of Queen Insun, the wife of King Myeongjong, and the 9th great-grandniece of Queen Soheon, the wife of King Sejong and daughter of Sim On.
She was also the 5th great-grandniece of Yi Ryang, a descendant of Grand Prince Hyoryeong, the son of King Taejong and Queen Wongyeong.
Her tomb is located on Hyereung 197, Donggureung-ro, Guri, Gyeonggi Province.