Los Andes vs Prueba was a single ship action fought in 1820, during the development of the Spanish American Wars of Independence. The battle was between the corvette Los Andes and the frigate Prueba, the first a Chilean privateer and the second a ship of the Spanish Navy. It lasted two days and occurred in two different places. There are differences between Chilean and Spanish historiography on the exact date, the starting place, the development and the result of the naval action.