Giovanni Paolo I Sforza (March 1497 – December 1535) was an Italian condottiero, the first in the Sforza family line of the Marquesses of Caravaggio.
He was a legitimized son of Ludovico il Moro, duke of Milan, and Lucrezia Crivelli. In 1513, when his half-brother Massimiliano shortly restored the family seignory in Milan, he took part in the defence of Novara against the French. When his other half-brother Francesco II made a similar attempt (1525), Giovanni Paolo was besieged in the Castello Sforzesco by the Spaniards under Antonio de Leyva; three years later he was again besieged by them in Lodi, this time with victorious results.
