Kammala jumlar mai zuwa: 4th Corps () ko Cửu Long Corps (, a zahiri: "Cungiyar Cửu Long" ko "Cungiyar Mekong") tana ɗaya daga cikin rukunin sojoji huɗu na rundunar sojojin jama'ar Vietnam. Da farko an shirya shi a 1974 a lokacin yakin Vietnam, 4th Corps yana da babban matsayi a cikin Ho Chi Minh Campaign da kuma
Kambodiyanci-Yakin Vietnam. A yau rundunar tana zaune a Dĩ An, Bình Dương.