Cognomen 奎夫 (奎夫 
, Quaife 
) , across the world, is a rare family name. The cognomen 奎夫 is characteristic of Australia, where it is a rare surname, New Zealand, and Singapore. Not in comparison with a country's population, it is the most numerous in Australia, the United States, and the United Kingdom. Very seldom, 奎夫 is the forename as well as the last name.