Cognomen Леклер (Leclaire 
, Leclair , Lekler 
) , all around the world, is a common last name. The family name Леклер is habitual in Guadeloupe, where it is quite a common surname, Canada, and France, where it is quite a rare surname. In absolute terms, this name is the most popular in the United States, Canada, and France. Much less frequently, Леклер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leclaire, Leclair | Germany, Canada, France, United States, Democratic Republic of the Congo |
| Lekler | Poland, Bulgaria, Russia, Nicaragua |
| Леклер | Russia, Ukraine |