Surname Galsim (Galsim 
) , worldwide, is quite a rare family name. The cognomen Galsim is characteristic of Philippines, where it is quite a rare surname, Qatar, where it is a rare surname, and United Arab Emirates. Measured by absolute frequency, the name is most common in Philippines, the United States, and Saudi Arabia.
| VARIANT | COUNTRY |
|---|---|
| Galsim | Canada, Philippines, United Arab Emirates, United States, Saudi Arabia |