In all the world, Дагнія (Dagnija 
, Дагнія 
) is a very rare female given name. The given name Дагнія is characteristic of Latvia, where it is quite a rare female name, and the United States, where it is an extremely rare principally girly, but scarcely male name. Much less frequently, Дагнія is the last name as well as the forename.