Cognomen Vaiba (Vaiba 
) , in all the world, is a very rare last name. The last name Vaiba is characteristic of Latvia, where it is quite a rare surname, Lithuania, where it is a rare surname, and Poland, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Latvia, India, and Poland. Likewise, Vaiba is the forename as well as the last name.