Benedetto Brin (17 May 1833 in Turin, Piedmont – 24 May 1898 in Rome, Lazio) was an Italian naval administrator and politician. He played a major role in modernizing and expanding the Italian Regia Marina (Royal Navy) from the 1870s to the 1890s, designing several major classes of warships, including the large ironclad warships of the Duilio, Italia, and Re Umberto classes, the pre-dreadnought battleships of the Ammiraglio di Saint Bon and Regina Margherita classes, and the armored cruisers of the Vettor Pisani and Giuseppe Garibaldi classes. His contributions to Italian naval power were marked by the naming of the second Regina Margherita-class battleship as Benedetto Brin, among other commemorations.