Dong Nai (Đồng Nai) is a province in the Southeast region of Vietnam, It is surrounded by Lam Dong in the north, Binh Thuan in the east, Ba Ria - Vung Tau in the south, Binh Duong, Binh Phuoc and Ho Chi Minh City in the west. The largest city in Đồng Nai is Biên Hòa. Prior to Vietnamese colonization, the area was dominated by the Funan, Chenla, Khmer empire and subsequent influences until 1627.

The topography includes some valleys, lowland, hill. The main kinds of land are bazan, alluvial soil. Therefore, it is good condition for industrial plants (rubber, coffee), and orchard.

There are two seasons: the rainy season lasts from May to October and the dry season lasts from November to April next year. The annual average temperature varies between 25.4 and 27.2oC.

Dong Nai has a developing industry. There are many big industrial zones, factories, handicraft village (Tan Van pottery village, skilful stone carving of Hoa group). Dong Nai's pottery has well-known beauty. The province own immense coffee, rubber farms and Nam Cat Tien National Park.

Tourists have ecological tours in forests and orchads in My Quoi, Thanh Hoi, Tan Trieu, Pho, Ong islets. The province is proud of many interesting sites such as Dong Nai River, Long An Lake, Suoi Tre Culture Site, Tri An Waterfall, Ma Da and Sac forests.

Dong Nai has special traditional culture of ethnic groups. The main religions are Buddhism and Catholic, Protestant. It is a home of some popular musical instruments like: Binh Da's dan da, flute in bamboo, copper gongs, cymbal, pan-pipe, Tam Pot sings of Ma group in Dinh Quan Dist.