Martha de San Bernardo was a 17th-century religious sister from Pampanga, Luzon, who holds historical significance as the first Filipino woman to enter the Roman Catholic monastic life. Born into an influential and wealthy family, she sought to join the Colettine Poor Clare order. After being refused entry into the Spanish East Indies, she traveled to Macau, where she was formally admitted into her religious order while aboard a ship in 1633.