Kuk Kyŏngin

Kuk Kyŏngin (Korean: 국경인; Hanja: 鞠景仁; died in 1592) was a Korean rebel that opposed Joseon during the Imjin War.

Kuk, originally from Chŏnju, was exiled to Hoeryŏng, where he held administrative roles but harbored deep resentment toward the central government. During the early phase of the Imjin War, he declared himself commander, incited a rebellion with over 5,000 followers, and detained Prince Imhae and Sunhwa along with their entourage. On 24th day, 7th month of 1592, Kuk surrendered the royal hostages to Katō Kiyomasa, securing control over Hoeryŏng in return and proclaiming himself Military Commander of Northern Hamgyŏng Province. After Chŏng Munbu recaptured Kyŏngsŏng from Kuk Sep'il, he called on Kuk Kyŏngin to surrender and support the loyalist cause. Kuk refused and instead prepared an assault on Kyŏngsŏng in alliance with Japanese troops, prompting Chŏng to issue a proclamation for his execution. Kuk Kyŏngin was ultimately ambushed and killed by Sin Sejun.