Family name 波伊 (Boey 
, 波伊 
, Proly 
) , all around the world, is a common cognomen. The last name 波伊 is habitual in South-eastern Asia, particularly Singapore, where it is quite a common surname, Malaysia, and Brunei, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Malaysia, Singapore, and Belgium. Likewise, 波伊 is the forename as well as the last name.