Surname Байка (Bajka 
, Bayka 
, Baai 
) , all over the world, is quite a common family name. The family name Байка is habitual in Hungary, where it is quite a rare surname, Turkey, and Romania. Measured by absolute frequency, it is the most numerous in India, Turkey, and Japan. Very seldom, Байка is the forename as well as the last name.