Last name Caika (Caika 
) , throughout the world, is a rare family name. The family name Caika is habitual in Latvia, where it is quite a rare surname, Lithuania, where it is a rare surname, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Latvia, India, and Lithuania. Also, Caika is the forename as well as the last name.