Cognomen เหล็น (Len 
, เหล็น 
) , worldwide, is a common family name. The last name เหล็น is habitual in Malaysia, where it is quite a common surname, Macao, where it is quite a rare surname, and Brunei. Not in comparison with a country's population, this name is the most popular in South-eastern Asia, particularly Malaysia, Myanmar, and Indonesia. Also, เหล็น is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Len | Canada, Myanmar, Malaysia, Indonesia, United States |
| เหล็น | Thailand |