The Ogooué-Lolo province is one of the nine provinces of Gabon. The regional capital is Koulamoutou where its home to 14,500 people in 2004. It is the ninth largest city in Gabon. where it is home to slightly more than one-third of the provincial population. It is bordered by Ogooué-Ivindo in the north, Haut-Ogooué in the east, Congo in the south, and Ngounié in the west.

Area: 25,380 km²

2-letter abbreviation/HASC: GA-OL

ISO 3166-2: GA-07

Population (1993): 43,915