Heldt is a German surname, an alternative spelling of Held, meaning 'hero'. Notable people with the surname include :
Barbara Heldt (born 1940), American writer Dora Heldt (born 1961), German writer Horst Heldt (born 1969), German footballer John C. Heldt (1900–1985), American football player and coach Margaret Vinci Heldt (1918–2016), American hairstylist Max Heldt (1872–1933), German politician Werner Heldt (1904–1954), German painter Will Heldt (born 2005), American football player
See also Antonio Barbosa Heldt (died 1973), Mexican teacher and politician Eugénia da Conceição-Heldt (born 1970), Portuguese-German political scientist Heldt Prize, a literary award