Santiago de Liniers, 1st Count of Buenos Aires re-takes the city of Buenos Aires, Argentina after the first British invasion.

Santiago Antonio María de Liniers y Bremond, 1st Count of Buenos Aires, KOM, OM was a Spanish military officer and a viceroy of the Viceroyalty of the Río de la Plata. Although born Jacques de Liniers in France, he is more widely known by the Spanish form of his name.

Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− global city, according to the GaWC 2024 ranking. The city proper has a population of 3.1 million and its urban area 16.7 million, making it the twentieth largest metropolitan area in the world.

The British invasions of the River Plate were two unsuccessful British attempts to seize control of the Spanish colony of the Viceroyalty of the Río de la Plata, located around the Río de la Plata in South America – in present-day Argentina and Uruguay. The invasions took place between 1806 and 1807, as part of the Napoleonic Wars, War of the Third Coalition at a time when Spain was an ally of Napoleonic France. In Argentine historiography, the two successive defeats of the British expeditionary forces are known collectively as the Reconquista and the Defensa, respectively.