Long An is a province in the Mekong Delta region of southern Vietnam. Long An is surrounded by Tay Ninh Province and Cambodia on the north, Ho Chi Minh City on east, Tien Giang Province on the south and Dong Thap Province on the west.

Long An is divided into smaller areas by a complex network of rives and canals. Silt from Vam Co Dong and Vam Co Tay rives has raised the level of the field of Long An. This silt makes a good condition for agriculture. The terrain is quite flat except some hills and mounds on the north. The western area belongs to the Plain of Reeds.

Long An is on tropical monsoon climate. The rain season lasts from May to October and the dry season lasts from November to April next year. Annual average temperature is 27.4oC. Annual average rainfall is 1,620mm.

Visitors are attracted to Long An by value of Oc Eo culture that develops on the Mekong Delta from 1st BC to 6th century BC. 12,000 objects of 20 prehistoric monuments and 100 Oc Eo culture relics have been found.

Beside these, Long An preserves valuable sites including House with Hundred Columns, Rach Coc Fort, Ton Thanh Pagoda. In Dong Thap Muoi Eco-tourist Site, tourists can discover many special flora and fauna and try typical dishes of the South.