Cognomen 莱尔 (Lair 
, Lael 
, 莱尔 
) , around the world, is a common surname. The family name 莱尔 is characteristic of France, where it is quite a rare surname, Estonia, and Argentina. Not in comparison with a country's population, it is commonest in France, the United States, and Argentina. Also, 莱尔 is the forename as well as the last name.