Cognomen Кейнс (Keynes 
, Keyns 
, Кейнс 
) , all around the world, is a rare last name. The cognomen Кейнс is characteristic of Australia, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United Kingdom. In absolute terms, it is the most numerous in Australia, the United Kingdom, and Indonesia. Likewise, Кейнс is the forename as well as the last name.