ARA Veinticinco de Mayo or Veinticinco de Mayo may refer to one the following vessels of the Argentine Navy: * , a brigantine launched in 1810, which served during the Independence War in the first Argentine naval squadron, and in the Civil War that followed * , a schooner which served as a corsair during the Independence War * , a frigate which served during the Cisplatine War * , a frigate lost in a shipwreck in 1828 * , a frigate in service from 1841 to 1860 * , a steam-powered ship which was captured by Paraguay in 1865 causing the Argentine intervention in the Paraguayan War * ARA Veinticinco de Mayo (1891), a cruiser in service from 1891 to 1916 * ARA Veinticinco de Mayo (C-2), a cruiser in service from 1931 to 1960 * ARA Veinticinco de Mayo (V-2), an aircraft carrier in ser