Hoàng Xuân Lãm (Chữ nho: 黃春覽; 10 October 1928, Huế–2 May 2017, Davis, California) was a general in the Army of the Republic of Vietnam (ARVN). Given responsibility for the I Corps Tactical Zone in 1967, Lãm coordinated the South Vietnamese offensive known as Operation Lam Sơn 719 which aimed at striking the North Vietnamese logistical corridor known as the Hồ Chí Minh Trail in southeastern Laos during 1971.
During the Siege of Khe Sanh village 1,500 civilians 400 of which were ethnic Bru, were looking for refuge. Hoang Xuan Lam authorized the evacuation of the 1,100 Vietnamese. The Bru were told to stay, Hoang Xuan Lam insisting that, 'there was no place for minority refugees.' It is presumed that nearly all Bru remaining died.
Due to his political connections with President Nguyễn Văn Thiệu, he was still serving as I Corps commander when the North Vietnamese launched the Nguyên Huế Offensive (called the Easter Offensive) in 1972. Lãm was recalled to Saigon on 2 May 1972 by Thiệu, who relieved him of his command, due to complaints regarding Lãm's fitness and competency as a general. Lãm was named to head an anti-corruption campaign at the Ministry of Defense.
Lãm's replacement as I Corps commander, Lieutenant General Ngô Quang Trưởng, said “I had served in I Corps under General Lãm and the disaster that occurred there was no surprise to me. Neither General Lãm nor his staff were competent to maneuver and support large forces in heavy combat.”