Family name สีห์ (Si 
, สีห์ 
) , across the world, is a widespread surname. The family name สีห์ is habitual in Macao, where it is a common surname, Myanmar, and Malaysia, where it is quite a common surname (explore the name in all countries). In absolute terms, it is the most numerous in China, India, and Myanmar. Also, สีห์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Si | Myanmar, Morocco, India, Indonesia, China |
| สีห์ | Thailand |