Around the globe, สมศีล (สมศีล 
) is a very rare dominantly male, but uncommonly feminine given name. The first name สมศีล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare mostly masculine, but infrequently feminine name. Much less frequently, สมศีล is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| สมศีล | Thailand |