Baldo can be either a given name, a nickname or a surname. It may refer to:
Given name Baldo of Gallura, the Giudice (ruler) of Gallura, on Sardinia (-) Baldo of Salzburg, 9th-century German priest, writer and teacher Baldo da Passignano (1244–1332), Italian poet and Hungarian official Baldo De' Serofini (fl. 1490–1520), Italian painter 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 Diodato (born 1938), Italian artist Baldassare "Baldo" di Gregorio (born 1984), German footballer Baldo Lupetino (1502–1566), Italian Protestant preacher Baldo Marro (1948–2017), 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 Elisa Baldo (born 1986), Italian archer Giuseppe Baldo (1914–2007), Italian footballer Giuseppe Baldo (1843–1915), Italian Catholic priest Maria Baldó i Massanet (1884–1964), Spanish teacher, feminist, folklorist, and liberal politician Marta Baldó (born 1979), Spanish rhythmic gymnast and Olympic and world champion Milla Baldo-Ceolin (1924–2011), Italian particle physicist Miro Baldo Bento (born 1975), Indonesian footballer Nicolas Baldo (born 1984), French cyclist