Jwaji (died 421) (r. 407–421)Ilyeon gives these dates, which are widely accepted. However, he also provides the alternate dates 389-404. was the sixth ruler of Geumgwan Gaya, a Gaya state of ancient Korea. He was the son of King Ipum and Queen Jeongsin.

The Samguk yusa reports that he appointed the relatives of a favoured concubine (yong nyeo, 傭女) to high office, and that this led to political trouble.Il-yeon: Samguk Yusa: Legends and History of the Three Kingdoms of Ancient Korea, translated by Tae-Hung Ha and Grafton K. Mintz. Book Two, page 149f. Silk Pagoda (2006). Furthermore, Silla took advantage of the kingdom's vulnerability and invaded. After the courtier Pak Won-do (朴元道) remonstrated with him, the king went to a fortuneteller, who read him an I Ching passage which indicated that he should destroy the heart of the problem. At that, he sent the concubine into exile and returned proper order to the court.

Family Father: King Ipum () Mother: Lady Jeongsin () Wife: Lady Boksu () – daughter of a daeagan named Doryeong (). Son: King Chwihui () Concubine, from a palace lady ()

See also List of Korean monarchs History of Korea Gaya confederacy Three Kingdoms of Korea

References