Laetus
Laetus is the name of the following people:
- Laetus of Micy , 6th century saint
- Laetus von Savins , 12th century saint
- Julius Pomponius Laetus (1428–1498; Italian Giulio Pomponio Leto), Italian humanist
- Quintus Aemilius Laetus († 193), Roman Praetorian prefect
- Quintus Maecius Laetus , Roman politician, senator and Praetorian prefect