| Unit Name: | Quân đoàn 4 (4th Corps) |
| Dates: | July 20, 1974 - present |
| Allegiance: | Vietnam People's Army |
| Branch: | Active duty |
| Type: | Army Corps |
| Role: | Regular force |
| Size: | Corps |
| Command Structure: | Vietnam People's Army |
| Garrison: | Dĩ An, Bình Dương |
| Battles: | Vietnam War Cambodian–Vietnamese War |
| Commander1: | Major General Lê Văn Hướng |
| Commander1 Label: | Current commander |
| Commander2: | Senior Colonel Đỗ Văn Lực[1] |
| Commander2 Label: | Deputy Commander and Chief of Staff Commander |
| Commander3: | Major General Trương Ngọc Hợi |
| Commander3 Label: | First party committee secretary |
4th Corps (Vietnamese: Quân đoàn 4) or Cửu Long Corps (Vietnamese: Binh đoàn Cửu Long, literally: Corps of Cửu Long or "Corps of the Mekong") is one of the three regular army corps of the People's Army of Vietnam. First organized in 1974 during the Vietnam War, 4th Corps had a major role in the Ho Chi Minh Campaign and the Cambodian–Vietnamese War. Today the corps is stationed in Dĩ An, Bình Dương.
In July 1973, the Central Committee of the Communist Party of Vietnam after its 21st conference issued a resolution of strengthening the armed forces in order to unify the country. In executing the issue, three months later the Ministry of Defence and the Military Commission of the Central Committee approved the plan of organizing regular army corps for the Vietnam People's Army. On July 20, 1974,[2] General Võ Nguyên Giáp, Minister of Defence, signed the edict that led to the establishment of the 4th Corps in Đông Nam Bộ, where is located the part of Mekong River called Cửu Long River (Cửu Long Giang or Sông Cửu Long), from which came the name Cửu Long Corps of the unit.[3] The first headquarters of the corps consisted of party committee secretary (bí thư) Hoàng Thế Thiện and commander (tư lệnh) Hoàng Cầm.
During the Ho Chi Minh Campaign, it was 4th Corps that advanced through the delta regions of Phước Long, Biên Hòa and later captured the Special Capital Military District of Saigon and several important targets within Saigon. After the Vietnam War, 4th Corps continued to engage in the Cambodian–Vietnamese War, the corps was awarded the title Hero of the People's Armed Forces (Anh hùng Lực lượng vũ trang nhân dân) in 1980.[3]
| Time | Commander | Notes | |
|---|---|---|---|
| 1974 - 1981 | |||
| 1981 - 1982 | |||
| 1982 - 1988 | |||
| 1988 - 1991 | |||
| 1991 - 1995 | Later promoted to General, Director of the General Department of Politics. | ||
| 1995 - 1999 | |||
| 1999 - 2004 | Later promoted to Lieutenant General, Deputy Chief of the General Staff. | ||
| 2004 - 2010 | |||
| 2010 - 2013 | Maj. Gen. Nguyễn Hoàng | ||
| 2013 - 2016 | Maj. Gen. Võ Trọng Hệ | ||
| 2016 - 2021 | Maj. Gen. Phạm Xuân Thuyết | ||
| 2016 - Oct 2022 | Maj. Gen. Lương Đình Lành | ||
| Oct 2022 - present | Maj. Gen. Lê Văn Hướng |