Last name สีสอ (Siso 
, สีสอ 
) , in the world, is a common surname. The cognomen สีสอ is habitual in Venezuela, where it is quite a rare surname, Israel, and Algeria. Measured by absolute frequency, it most frequently occurs in Algeria, Venezuela, and Philippines. Likewise, สีสอ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siso | Philippines, Israel, Algeria, Venezuela, India |
| สีสอ | Thailand |