Baert is a Flemish surname particularly common in the Belgian provinces of West and East Flanders. It may be patronymic ("son of Baert") (Bart), though "baert" is also an archaic spelling of Dutch "baard", meaning "beard", and may have referred to a person's appearance or profession as a barber. People with this surname include:

Arthur Baert (1910–?), Belgian chess player

Barbara Baert (born 1967), Belgian art historian

Dirk Baert (born 1949), Belgian track cyclist

Dominique Baert (born 1959), French Flemish politician

François Baert (1651–1719), Belgian Jesuit hagiographer

Frans Baert (1925–2022), Belgian lawyer and philosopher

Jan Baert (1650–1702), Dunkerque corsair

Jean-Pierre Baert (born 1951), Belgian racing cyclist

Louis Baert (1903–1969), Belgian football referee

(1932–1985), Belgian radio and television presenter

Patrick Baert (born 1961), Belgian sociologist and social theorist

Dutch-language surnames

Surnames of Belgian origin

Patronymic surnames

Baert