Cognomen Iagmour (Ягмур 
, Иагмур , Iagmour 
) , across the world, is a rare last name. The cognomen Iagmour is characteristic of Ukraine, where it is a rare surname, Romania, and Kazakhstan, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Romania. Very seldom, Iagmour is the forename as well as the last name.