De Laet
De Laet is a Dutch-language occupational surname. A "laet" was a type of serf. The archaic spelling De Laet is most common in Belgium, especially around Antwerp, while "de Laat" is more common in the Netherlands, especially in North Brabant. People with this name include:
;De Laet / DeLaet
- Carlos de Laet, Brazilian journalist, professor and poet
- Gaspard de Laet, 16th-century Flemish medical astrologer and almanac maker
- Graham DeLaet, Canadian golfer
- Felix De Laet, Belgian DJ and record producer
- Joannes de Laet, Dutch geographer and director of the Dutch West India Company
- , Belgian poet, writer and Flemish Movement activist
- Ritchie De Laet, Belgian footballer
- Kent DeLaet, North American Hillbilly
;De Laat
- Itzhak de Laat, Dutch short-track speed-skater
