Đông Bắc is the region to the north of the Red River Delta in Vietnam, bordering China. It is called Northeast to distinguish it from the Tây Bắc or "Northwest", but it is actually in the north and northeast of Hanoi, wider than Việt Bắc or "Northern Vietnam". The Northeast is one of three sub-regions of Northern Vietnam. Sometimes the Northeast includes the Red River Delta.

Phú Thọ is a province in northern Vietnam. Its capital is Việt Trì, which is 80 kilometres (50 mi) from Hanoi and 50 kilometres (31 mi) from Nội Bài International Airport. The province covers an area of 3,534.56 km2 (1,364.70 sq mi) and, as of 2023, it had a population of 1,530,800.