Cognomen Bī (Bi 
, Bī 
, Bygrave 
) , throughout the world, is a widespread surname. The family name Bī is habitual in Saint Kitts and Nevis, where it is a common surname, Ivory Coast, where it is quite a common surname, and Fiji (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in India, Pakistan, and Ivory Coast. Very seldom, Bī is the forename as well as the last name.