Surname สำรอง (Spare 
, Samrong 
, สำรอง) , globally, is quite a rare family name. The cognomen สำรอง is habitual in United Arab Emirates, where it is quite a rare surname, Latvia, and the United Kingdom, where it is a rare surname. In absolute terms, it is commonest in the United States, the United Kingdom, and Thailand. Likewise, สำรอง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Spare | United Kingdom, United Arab Emirates, United States, Ethiopia, Indonesia |
| Samrong | China, United States, France, Thailand, India |