Jeongjong

Jeongjong may refer to:

Korean rulers:
 * Jeongjong, 3rd monarch of Goryeo (923–949)
 * Jeongjong, 10th monarch of Goryeo (1018–1046)
 * Jeongjong of Joseon (1357–1419), a.k.a. Yi Bang-gwa, Yi Gyeong