Giedraitis is a Lithuanian language family name. The Polish-language version is Giedroyć.
Notable people with the surname include:
Antanas Giedraitis (1848–1909), Polish-Lithuanian noble and geologist Giedraitis family, noble family in Polish-Lithuanian Commonwealth Andrius Giedraitis (born 1973), Lithuanian basketball player Merkelis Giedraitis (1536–1609), bishop of Samogitia Robertas Giedraitis (born 1970), Lithuanian basketball player and coach Rokas Giedraitis (born 1992), Lithuanian basketball player Romualdas Giedraitis (1750–1824), Lithuanian military commander, namesake of General Romualdas Giedraitis Artillery Battalion