Surname Амадэй (Medeo 
, Amadey 
, Амадэй) , throughout the world, is a rare last name. The family name Амадэй is characteristic of Bulgaria, where it is quite a rare surname, Argentina, where it is a rare surname, and Tanzania, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Argentina, India, and Bulgaria. Much less frequently, Амадэй is the forename as well as the last name.