Bien Hoa Base Camp (also known as Bien Hoa Army Base) is a former U.S. Army and Army of the Republic of Vietnam (ARVN) base northeast of Biên Hòa in Đồng Nai province, southern Vietnam.

In June and July they were joined by the 1st Battalion, Royal Australian Regiment and a New Zealand Artillery Battery attached as the third battery of the U.S. 3rd Battalion, 319th Field Artillery Regiment.

The allied units were under the operational control of the 173rd until April 1966 when they were given their own tactical area of responsibility (TAOR) in Phước Tuy Province.

[2][3] On 15 March 1971 a grenade was tossed into an officer billet at the base killing 1st Cavalry Division (Airmobile) Lieutenants Thomas A. Dellwo and Richard E. Harlan.

Private Billy Dean Smith was charged with the murders, but was acquitted at a court-martial in November 1972.