Coordinates: 21°12′18″S 41°53′16″W / 21.20500°S 41.88778°W
Itaperuna (Portuguese pronunciation: [itapeˈɾunɐ]) is a municipality in the Brazilian state of Rio de Janeiro. It had a population of 95.841 in 2010, and has an area of 1.105,3 km2.
Itaperuna was founded in 1889, after being separated from the municipality of Campos dos Goytacazes. Its current mayor (from 2009 to 2012 is Fernando "Paulada" Fernandes (PSDB).
Itaperuna is located 230 km from the state capital Rio de Janeiro. Its neighbouring municipalities are: