Cognomen Тетчер (Thatcher 
, Тетчер 
) , around the globe, is a common last name. The family name Тетчер is characteristic of Northern Europe, particularly Guernsey, where it is quite a common surname, Jersey, and Isle of Man. Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Australia. Much less frequently, Тетчер is the forename as well as the last name.