Ubaldini is an Italian surname. Notable people with the surname include:
Domenico di Bartolommeo Ubaldini or Domenico Puligo (1492–1527), Italian painter of the Florentine Renaissance Federigo Ubaldini (1610–1657) Italian Dante and Petrarch scholar, and secretary to papal consitory Migliorino Ubaldini (active 1548), Italian military engineer working in Scotland Ottaviano or Attaviano degli Ubaldini (1214–1273), Italian cardinal Petruccio Ubaldini (1524–1600), Italian calligraphist and illuminator on vellum who worked in England Roberto Ubaldini (1581–1635), bishop and cardinal of the Catholic Church Ruggieri degli Ubaldini (active 1271–1295), Italian archbishop, mentioned in Dante's Inferno Saúl Ubaldini (1936–2006), Argentine labor leader and parliamentarian for the Peronist Justicialist Party
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