# List of allied military operations of the Vietnam War (1971)

This article is a list of known military operations of the Vietnam War in 1971, conducted by the armed forces of the Republic of Vietnam, the Khmer Republic, the United States and their allies.
| Date Duration | Operation Name | Unit(s) – Description | Location | VC–PAVN KIAs | Allied KIAs |
| Jan 1 – Mar 13 | Operation Greene Storm | 173rd Airborne Brigade operation | Bình Định, Phu Bon and Pleiku Provinces | | |
| Jan 1 – Mar 31 | Operation Greene Lightning | 173rd Airborne Brigade operation | Bình Định Province | | |
| Jan 1 – Apr 31 | Operation Keystone Robin (Charlie) | Redeployment of the 1st Cavalry Division, 2nd Brigade, 25th Infantry Division and 11th Armored Cavalry Regiment from South Vietnam to the United States | | | |
| Jan 4 – 21 | Operation Golden Dragon II | ROK 2nd Marine Brigade clear and search operation | Quảng Nam Province | 1 | |
| Jan 11 – Mar 29 | Operation Upshur Stream | 1st Reconnaissance Battalion, 1st Battalion, 1st Marines and 1st Battalion, 11th Marines search and destroy operation | Quảng Nam Province | | |
| Jan 30 – Feb 5 | Operation Dewey Canyon II | 1st Brigade, 5th Infantry Division, 101st Airborne Division and 2nd Squadron, 17th Cavalry Regiment operation to support the ARVN Operation Lam Son 719 effort to open Route 9 through Khe Sanh to the Laotian border and to reestablish Khe Sanh as a major combat support base | Route 9 | | estimated 75 |
| Feb 2 – Mar 8 | Operation Ivy | 173rd Airborne Brigade reconnaissance operation | | | |
| Feb 3 – Mar 10 | Operation Hoang Dieu 103 | III MAF, ROK 2nd Marine Brigade and ARVN 51st Regiment operation | Quảng Nam Province | | |
| Feb 8 – Mar 25 | Operation Lam Son 719$^{:66–85}$ | ARVN armored and airborne invasion of Laos with US airlift and air support along Route 9 to Tchepone to sever the Ho Chi Minh Trail | Route 9 | 2163 | 1529 ARVN KIA, 625 MIA, 215 US KIA, 38 MIA |
| Mar 1 – Jul 1 | Operation Finney Hill | 11th Infantry Brigade and 198th Infantry Brigade operation | Quảng Ngãi Province | 781 | 93 |
| Mar 1 – Jul 1 | Operation Middlesex Peak | 196th Infantry Brigade, 198th Infantry Brigade and ARVN 2nd Division operation | Quang Tin and Quảng Ngãi Provinces | 463 | |
| Mar 9 | Operation Bright Light | 198th Infantry Brigade POW recovery operation | Quảng Ngãi Province | | |
| Mar 13 – 27 | Operation Wasco Rapids | 198th Infantry Brigade and ARVN 2nd Division clear and search operation in | Song Ve river valley, Quảng Ngãi Province | | |
| Mar 14 – Apr 21 | Operation Greene Sure | 173rd Airborne Brigade operation | Bình Định Province | | |
| Apr 8 – Jul 11 | Operation Montana Mustang | 1st Brigade, 5th Infantry Division operation intended to locate and destroy enemy forces, eliminate VC infrastructure, conduct reaction/exploitation operations and assist in pacification and Vietnamization | Quảng Trị Province | 91 | 57 |
| Apr 29 – Jul 1 | Operation Caroline Hill | 196th Infantry Brigade operation | Quảng Nam Province | | |
| May 1 – June 30 | Operation Keystone Oriole (Alpha) | Redeployment of three infantry battalions and one air cavalry squadron from South Vietnam to the United States | | | |
| May 4 – 31 | Operation Toan Thang TT02 | ARVN III Corps operation to lure the VC with a regiment placed in Snoul | north of Lộc Ninh on Route 13 | | |
| May 4 – June 29 | Operation Quyet Thang 208 | ARVN 2nd Division and 71st Assault Helicopter Company operation | Quang Tin, Quảng Ngãi and Kon Tum Provinces | | |
| June 6–7 | Operation Overlord | 6–7 June 1971 | 3rd Battalion, Royal Australian Regiment pacification operation in Long Khánh Province | | |
| Jul | Operation Iron Fox | 2nd Squadron SAS, 3rd Battalion, Royal Australian Regiment and 4th Battalion, Royal Australian Regiment/Royal New Zealand Infantry Regiment (ANZAC) operation against the VC 274th Regiment | | 12 | 1 |
| Jul 1 – Aug 31 | Operation Keystone Oriole (Bravo) | Redeployment of the 173rd Airborne Brigade from South Vietnam to the United States | | | |
| Jul 1 – Oct 4 | Unnamed | 23rd Infantry Division operation | Quảng Ngãi Province | 324 | |
| Aug 20 – Dec 3 | Operation Chenla II | FANK operation against NVA to reopen Route 6 | Route 6 | 3500+ claimed | 4500+ claimed |
| Sep 1 – Nov 30 | Operation Keystone Oriole (Charlie) | Redeployment of the 23rd Infantry Division, 11th Infantry Brigade and 198th Infantry Brigade from South Vietnam to the United States | | | |
| Sep 6 – 25 | Operation Lam Son 810 | ARVN operation with US support to disrupt the flow of PAVN supplies | northern Quảng Trị Province | 175 | 75 |
| Sep 18 – Oct 2 | Operation Ivanhoe | 4th Battalion, Royal Australian Regiment/Royal New Zealand Infantry Regiment (ANZAC) security operation in northern Phước Tuy Province | | 5 |
| Sep 28 – Oct 2 | Operation Katum | 3/1 Cavalry and 2nd Squadron, 11th Armored Cavalry Regiment security operation for the withdrawal of US personnel | FSB Katum, Tây Ninh Province | | |
| Dec 1 – Jan 31 72 | Operation Keystone Mallard | 101st Airborne Division redeployment from South Vietnam to the United States | | | |
| Dec 26 – 30 | Operation Proud Deep Alpha | USAF and USN bombing operations | Route Package 1 south of the 20th Parallel | | 7 |