Baldo can be either a given name or a surname. It may refer to:
Given name:
Baldo of Gallura, the Giudice (ruler) of Gallura, on Sardinia (c. 1040-c. 1060)
Baldus de Ubaldis (1327–1400), Baldo degli Ubaldi in Italian, Italian jurist
Baldo Angelo Abati, 16th-century Italian physician and naturalist
Baldo Baldi (1888-1961), Italian fencer and Olympic champion (team)
Baldo di Gregorio (born 1984), German footballer
Baldo Marro, Filipino actor, screenwriter, stunt director, film director and producer
Baldo Prokurica (born 1958), Chilean lawyer, academic and politician
Baldo Santana (born 1995), Spanish footballer known simply as Baldo
Surname:
Giuseppe Baldo (1914–2007), Italian footballer
Marta Baldó (born 1979), Spanish rhythmic gymnast and Olympic and world champion
