Six Provinces of Southern Vietnam

The Six Provinces of Southern Vietnam (Vietnamese: Nam Kỳ Lục tỉnh, 南圻六省 or just Lục tỉnh, 六省) is a historical name for the region of Southern Vietnam, which is referred to in French as Basse-Cochinchine (Lower Cochinchina). The region was politically defined and established after the inauguration of the Nguyễn dynasty, and called by this name from 1832, when Emperor Minh Mạng introduced administrative reforms.

The six provinces, which in 1832 Emperor Minh Mạng divided Southern Vietnam into, are:

These provinces are often subdivided into two groups: the three eastern provinces of Gia Định, Định Tường, and Biên Hòa; and the three western provinces of Vĩnh Long, An Giang, and Hà Tiên.

The French occupied three eastern provinces in 1862 during the Cochinchina campaign and eventually annexed all six provinces in 1867, establishing the colony of French Cochinchina. In October 1887, Cochinchina was integrated into French Indochina, which lasted until March 1945.