Cognomen Битер (Bitter 
, Битер 
) , across the world, is a common family name. The family name Битер is characteristic of Antigua and Barbuda, where it is quite a common surname, Germany, where it is quite a rare surname, and Hungary. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and India. Much less frequently, Битер is the forename as well as the last name.