jeong mong-ju (, hanja:鄭夢周, 1337 - april 1392) was a korean goryo dynasty politician, writer, poet and thinker. the last prime minister of goryo dynastys 1390 to 1392. he was murdered by lee bang-won (이방원) and jo yeong-mu (조영무), in sunjukkyo (선죽교). another name was 'mongran' (몽란, 夢蘭) and 'mongryong' (몽룡, 夢龍), nickname was poeun (포은, 圃隱).