Family name R-A (R-A 
) , worldwide, is a rare last name. The cognomen R-A is characteristic of Poland, where it is a rare surname, Algeria, where it is a very rare surname, and Saudi Arabia. Not in comparison with a country's population, the name is most common in Poland, Algeria, and Myanmar. Likewise, R-A is the forename as well as the last name. Parts of the name also exists independently as a first name R, and a first name A.