Jeong In-ji (
Korean: 정인지;
Hanja: 鄭麟趾; December 28, 1396 – November 26, 1478) was a Korean
Neo-Confucian scholar, historian who served as Vice Minister of Education or Deputy Chief Scholar (Head of Office for Special Advisors) during the reign of King
Sejong the Great, Minister of Rites during the reign of King
Munjong and
Danjong, Left or Second State Councillor from 1453 to 1455 during the reign of King
Danjong, and
Chief State Councillor from 1455 to 1458 during the reign of King
Sejo. He was nicknamed Hakyeokjae (학역재). He was from the Hadong Jeong clan (하동 정씨; 河東 鄭氏)
He is perhaps best known for having written the postscript of the Hunmin Jeongeum Haerye, the commentary on and explanation of the native alphabet
Hangeul invented by
King Sejong in 1443. He also contributed to the Goryeo-sa, the official history of the Goryeo dynasty, and the Yongbi Eocheon-ga (용비어천가).
His second son,
Jeong Hyeon-jo, was married to
Princess Uisuk, the second daughter of King
Sejo of Joseon. His descendants would eventually have royal connections through their marriages.