Family name Естен (Естен 
, Estaing 
) , around the world, is a very rare cognomen. The family name Естен is habitual in Cayman Islands, where it is quite a rare surname, France, where it is a very rare surname, and the United Kingdom. Measured by absolute frequency, it is the most numerous in France, the United States, and the United Kingdom. Much less frequently, Естен is the forename as well as the last name.