Family name Oepa (Oepa 
) , in all the world, is a very rare last name. The last name Oepa is characteristic of Northern Europe, particularly Estonia, where it is quite a rare surname, Latvia, where it is a rare surname, and Finland, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Estonia, Latvia, and India. Also, Oepa is the forename as well as the last name.