Tacna is a city in southern Peru and the region capital of the Tacna Region. It is located on the Atacama Desert, inland from the Pacific Ocean in the valley of the Caplina River, only 35 km (21 mi) north from the border with Chile.
Tacna is one of the most patriotic cities in Peru, with many monuments and streets named after heroes of Peru's struggle for independence (1821-1824) and the War of pacific (1879-1883). Residents of Tacna are known in Spanish as tacneños. Its name originates from the Quechua words taka ("hit") and na ("something to do"), which would mean "a place to hit". This expression is thought to be related to the Quechua conquest of the Aymara people.

The border between the Tacna Region and Chile is known as La Línea de la Concordia. The region is located below the Titicaca plateau, and has a diverse geography, including volcanoes, deserts and mountainous zones, from which arise rivers that go over the punas and the plateaus, thus forming the hydrographical system of this zone. The region is small in size, but has a great mining and agriculture potential. It has various climates and a diverse production.