Estadio Mariano Melgar, Football stadium in Arequipa, Peru.

Estadio Mariano Melgar is a football stadium in Arequipa with four grandstands, a natural grass playing field, and dedicated facilities for athletes. The venue includes locker rooms and training areas designed to accommodate around 15,000 spectators.

The stadium opened in 1954 in a neighborhood created to mark the fourth centennial of Arequipa's Spanish founding. Its construction was part of the city's urban expansion during the mid-20th century.

The stadium is named after Mariano Melgar, the Arequipa poet and patriot executed by Spanish royalists in 1815, and it is also called Estadio de Cuarto Centenario because it stands in the Cuarto Centenario neighbourhood built for the fourth centenary of the city's Spanish founding. On match days the barras occupy fixed sections: León del Sur behind the scoreboard in the centre of the Sur stand, Infierno Rojinegro in the Oriente stand by the northern edge, and visiting supporters confined to the Norte stand.

The stadium sits at 2,319 metres above sea level in the IV Centenario neighbourhood of Arequipa. It has ten entrances in total: two for each of the five sections, plus two extra ones on the Occidente side. Visiting supporters are confined to the Norte stand, while the home barras occupy the Sur and Oriente stands.

The high-altitude location creates a distinct physical environment where visitors notice the thinner air, which significantly affects athletic performance. Home teams leverage this geographic advantage in matches against opponents from lower elevations.