Queen Sinjeong or Queen Shin-Jung (Hangul: ????, Hanja: ????; 21 January 1809 - 4 June 1890) also known as Queen Dowager Hyoyu (?????) was the only wife of Crown Prince Hyomyeong of Joseon and mother of king Heonjong of Joseon.
She served as nominal regent of Joseon during the minority of Gojong's reign, whom she had selected to place upon the throne, in 1864-1873, although she left all de facto power to the king's father Heungseon Daewongun and only kept the formal title as regent.