Surname Roscius (Roscius 
, Росциус 
) , in the world, is a very rare cognomen. The family name Roscius is characteristic of Russia, where it is a very rare surname, Canada, where it is an extremely rare surname, and Philippines. Very seldom, Roscius is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roscius | Canada, Brazil, Philippines |
| Росциус | Russia |
|
anthoni jacobsz roscius Dutch writer and physician, NL (b. 1593) |
|
| christiane dorothee roscius (b. 1670) |
|