Port of Buenos Aires, Maritime transport hub in Buenos Aires, Argentina

The Port of Buenos Aires lies along the Río de la Plata in the Retiro ward, known as Puerto Nuevo. Its Puerto Nuevo sector runs from Avenida Córdoba to Salguero and holds six docks, labelled A to E for overseas vessels and F for cabotage, with 7,250 m of quay and 23 berths for ships over 300 m. The Benito Quinquela Martín cruise terminal, at Avenida Ramón S. Castillo and Avenida de los Inmigrantes, covers 12,786 m².

Buenos Aires was founded as a port by Juan de Garay in 1580, but Peruvian merchants had it closed in 1595, fostering smuggling until the 1776 creation of the Viceroyalty of Río de la Plata. Law 280 of 1868 led to Puerto Madero, built from 1884 with four docks designed by John Hawkshaw and inaugurated in 1889. Puerto Nuevo expanded the port in the 20th century.

The passenger terminal is named after Benito Quinquela Martín, the La Boca painter, and sits at the corner of Avenida Ramón S. Castillo and Avenida de los Inmigrantes. Ferries run from here to Colonia del Sacramento and Montevideo in Uruguay, and Sturla boats carry tourists to Tigre. The terminal reopened in 2011 with a waiting room for 2,000 people and 72 check-in desks.

The port is accessible by public transport from most neighborhoods, and certain waterfront promenades are open to visitors on foot. Direct access to cargo terminals is typically restricted, but the surrounding neighborhoods are easy to explore.

The Catalinas pier, built by Francisco Seeber from 1872, was Argentina's first harbour created by land reclamation; its pier reached several hundred metres into the river and served shipping and passengers for two decades before the larger works replaced it.