Tacna Ornamental Fountain, Neoclassical fountain in Paseo Cívico, Tacna, Peru.

The Tacna Ornamental Fountain is a 6 m high and 6 m wide neoclassical Greek-style fountain in the Paseo Cívico. It has four basins, the largest 6 m in diameter, on a granite base. Four statues, two male and two female, represent the four seasons, accompanied by an anchor, oar, bundle, anchor ropes and boat helm. Sixteen dolphins adorn the octagonal basin, and four nude children hold hands around a smaller circular basin.

The fountain's origin is debated: it was reportedly designed by sculptor O'Lenhard and brought from Brussels, though its statues are attributed to French sculptor Mathurin Moreau. It was either gifted by President José Balta's government around 1869 or arrived with the Uchusuma River contract. French technician Matias Richet installed it, and Peruvian architect Salazar built the stone plinth. In 1885 it was moved a few metres to its current spot, work finished by Zenón Ramírez after Salazar's death.

The four statues are commonly read as the four seasons, though some historians, including Luis Cavagnaro, propose they depict sea deities: Neptune, his wife Amphitrite, Triton and a Nereid. The figures are accompanied by an anchor, oars, nets, shells and a boat's tiller.

The fountain stands in the Paseo Cívico, the civic promenade at the centre of Tacna, where it is reached on foot from the surrounding streets. It is a granite-based monument six metres high, so it can be examined from ground level; the four statues and the sixteen dolphins of the octagonal basin are best seen in daylight.

The statues are attributed to French sculptor Mathurin Moreau, while the fountain is said to have been designed by a sculptor named O'Lenhard and brought from Brussels. About twenty identical fountains exist worldwide, including in Genoa, Boston and two on Buenos Aires's 9 de Julio Avenue.