| Operation Clinch Valley | |||||
|---|---|---|---|---|---|
| Part of the Vietnam War | |||||
| |||||
| Belligerents | |||||
 United States South Vietnam |
 North Vietnam | ||||
| Commanders and leaders | |||||
|
John J. Hennessey Sidney Bryan Berry Ngô Quang Trưởng |
| ||||
| Units involved | |||||
|
1st Brigade, 101st Airborne Division 3rd Regiment, 1st Infantry Division | 9th Regiment | ||||
| Casualties and losses | |||||
|
| US body count: 266 killed | ||||
Operation Clinch Valley was a joint U.S. Army and Army of the Republic of Vietnam (ARVN) military operation during the Vietnam War to engage People's Army of Vietnam (PAVN) units on the Khe Sanh plateau and prevent them from reinforcing PAVN units in the A Sầu Valley.