Surname Vaykus (Вайкус 
, Vaykus 
) , in the entire world, is a very rare family name. The surname Vaykus is habitual in Russia, where it is a very rare surname, Kazakhstan, and Ukraine, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Russia, India, and Kazakhstan. Much less frequently, Vaykus is the forename as well as the last name.