Surname เหล็กกล้า (Steel 
, Lekkla 
, เหล็กกล้า) , around the globe, is a common family name. The last name เหล็กกล้า is habitual in the United Kingdom, where it is quite a common surname, New Zealand, and Australia, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Australia. Very seldom, เหล็กกล้า is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Steel | Indonesia, Myanmar, United Kingdom, Australia, United States |
| Lekkla | India, United States, Thailand |