Cognomen סימאן (Ciman 
, סימאן 
) , in the entire world, is quite a rare family name. The cognomen סימאן is characteristic of Italy, where it is a rare surname, Belgium, and Lithuania. Not in comparison with a country's population, it is the most numerous in Italy, India, and France. More frequently, סימאן is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ciman | India, Italy, France, Malaysia, Indonesia |
| סימאן | Israel |