Tân An is the capital city of Long An Province in Mekong Delta region of Vietnam.

Tân An is the political, cultural, economic, scientific and technological center of Long An province.

[1][2] Management of rivers in the Mekong Delta began to develop the area in 1705, bringing commerce to the Vàm Cỏ Tay River at Tân An (then written: 新安) as the end of the Bảo Định Canal in the first years of the Nguyễn dynasty around 1802.

[4] Tân An was the headquarters of the 3rd Brigade, 9th Infantry Division (United States) during the Vietnam War.

The base camp at Tân An was turned over to the South Vietnamese Army when the 9th division left in 1970.