Family name لايت (Light 
, Leite 
, Laet 
) , worldwide, is a widespread last name. The last name لايت is habitual in Portugal, where it is a common surname, Cabo Verde, and Brazil (explore the name in all countries). In absolute terms, it is commonest in Brazil, Portugal, and the United States. Very seldom, لايت is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Light | Myanmar, Portugal, Egypt, Brazil, United States |
| Leite | Portugal, Egypt, Brazil, United States, Angola |
| Laet | Myanmar, Brazil, United States, United Kingdom, Indonesia |
| لايت | Iraq, Egypt, Sudan, Syria, Saudi Arabia |