Queen Hyoui (Korean: 효의왕후; Hanja: 孝懿王后; 5 January[citation needed] 1754[1] – 10 April[citation needed] 1821[1]), of the Cheongpung Kim clan (청풍 김씨; 淸風 金氏), was the wife and queen consort of King Jeongjo of Joseon.
She married Yi San, then known as the crown prince's son, in 1762 at the age of 9, on the twenty-fifth day of the second lunar month in the thirty-eighth year of King Yeongjo's reign.
In the winter of 1761, Hong Bong-han had been invited by Board Minister Kim Seong-eung to celebrate his mother’s 60th birthday.
Around the time, Princess Hwawan was trusted by her father, so the young crown prince was thought to remain safe during the rest of Yeongjo's reign.
She later died at Jagyeong Hall, Changgyeong Palace, Hanseong, on 10 April 1821 of King Sunjo's twenty-first year of reign.