In the entire world, Lettre (Letter 
, Leter 
, Letre 
) is a rare gender-neutral given name. The first name Lettre is habitual in Romania, where it is a rare masculine name, Myanmar, where it is a very rare feminine name, and Indonesia, where it is a very rare masculine name. Not in comparison with a country's population, it most frequently occurs in Indonesia, Nigeria, and Myanmar. More prevalently, Lettre is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Letter | Belgium, Myanmar, Switzerland, Indonesia, United States |
| Leter | Netherlands, Suriname, Myanmar, Indonesia, United States |
| Letre | Spain, Brazil, India, Mexico, United States |
| Lettre | Canada, Italy, Switzerland, United States, Germany |