Hoàng Xuân Lãm (10 October 1928, Huế–2 May 2017, Davis, California) was a South Vietnamese lieutenant general in the Army of the Republic of Vietnam (ARVN).

Lãm authorized the evacuation of the 1,100 Vietnamese, but the Bru were told to stay, Hoang Xuan Lam insisting that, 'there was no place for minority refugees.

[2]: 308 Lãm commanded Operation Lam Son 719 which aimed at striking the Ho Chi Minh Trail in southeastern Laos during February-March 1971.

[2]: 473 Due to his political connections with Thiệu, he was still serving as I Corps commander when the North Vietnamese launched the 1972 Easter Offensive.

During the First Battle of Quảng Trị, Lãm had provided little support to General Vũ Văn Giai, commander of the 3rd Division and rarely visited the front line, choosing to monitor the progress of the battle through periodic reports back in Da Nang.