Family name Bainas (Bainas 
) , worldwide, is a rare last name. The cognomen Bainas is characteristic of France, where it is a very rare surname, Canada, and Malaysia. In absolute terms, it is commonest in India, France, and Mexico. Very seldom, Bainas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bainas | Mexico, Canada, Malaysia, India, France |