What is "guidobaldo"

Guidobaldo may refer to:

• Guidobaldo Abatini (1600–1656), Italian painter of the Baroque period, active mainly in Rome and Usigni
• Guidobaldo del Monte (1545–1607), Italian mathematician, philosopher and astronomer
• Guidobaldo da Montefeltro (1472–1508), Italian condottiero and the Duke of Urbino from 1482 to 1508
• Guidobaldo II della Rovere, Duke of Urbino (1514–1574), Italian condottiero, Duke of Urbino from 1538 until his death