Ubaldo is a masculine Italian and Spanish given name. Notable people with the name include:
Ubald of Gubbio (Ubaldo Baldassini) (ca. 1084–1160), Italian bishop and Catholic saintGuido Ubaldo Abbatini (1600–1656), Italian painter of the Baroque periodUbaldo Aquino (born 1958), football (soccer) referee from ParaguayUbaldo Bellugi (1899–1992), Italian poet, writer and playwright and Podestà of MassaUbaldo Buttafava (died 2007), Italian communist politicianUbaldo Caccianemici (died 1171), Italian cardinal and cardinal-nephew of Pope Lucius IIUbaldo Fillol (born 1950), Argentine football coach and former goalkeeperUbaldo Gandolfi (1728–1781), Italian painter of the late-Baroque periodUbaldo Giraldi (1692–1775), Italian canonistUbaldo Heredia (born 1956), former Major League Baseball right-handed starting pitcherUbaldo I Visconti (died 1230), the de jure overlord of the Giudicato of Cagliari from 1217Ubaldo Jiménez (born 1984), Major League Baseball starting pitcherUbaldo Mesa (1973–2005), male professional road cyclist from ColombiaUbaldo Nestor Sacco (1955–1997), Argentine boxerUbaldo of Gallura, the Judge of Gallura from 1225 to his death in 1238Ubaldo Passalacqua (born 1918), Italian professional football playerUbaldo Ranzi, Italian bobsledder who competed in the late 1990s and the early 2000sJoão Ubaldo Ribeiro (born 1941), Brazilian author born in Itaparica, BahiaUbaldo Ricci, Italian painter of the late-Baroque who practised in Italy in the 18th centuryUbaldo Righetti (born 1963), retired Italian professional football playerUbaldo Soddu (1883–1949), Italian military officer, commanded the Italian Forces in the Greco-Italian War for a monthUbaldo Terzano, Italian cinematographer and camera operator, with numerous collaborations with Mario Bava