| Quân đoàn 4 (4th Corps) | |
|---|---|
| Active | July 20, 1974–present |
| Country |  Vietnam |
| Allegiance | &sq=&lang=&file=File:Flag_of_the_People%27s_Army_of_Vietnam.svg){kind=small} Vietnam People's Army |
| Branch | Active duty |
| Type | Army Corps |
| Role | Regular force |
| Size | Corps |
| Part of | Vietnam People's Army |
| Garrison/HQ | Dĩ An, Bình Dương |
| Engagements | Vietnam War Cambodian–Vietnamese War |
| Commanders | |
| Current commander | Major General Lê Văn Hướng |
| Deputy Commander and Chief of Staff Commander | Senior Colonel Đỗ Văn Lực[1] |
| First party committee secretary | Major General Trương Ngọc Hợi |
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.