Ritual scholar and chief scholar (pen name Ubok)
| Life | 1563 ~ 1633 |
| Era | 조선 |
| Clan | 진주 정씨 |
Jeong Gyeong-se, with courtesy name Gyeongim and pen names Ubok and Ilmuk, belonged to the Eosa-gong branch. A disciple of Ryu Seong-ryong in the Toegye tradition and an authority on ritual, he served in the righteous army at Sangju during the Imjin War. After the Injo Restoration he rose to minister of punishments and minister of personnel concurrently chief scholar; his posthumous title was Munjang. He is said to have founded the Jonaewon medical house in Sangju; his works include the Ubokjip.