In the entire world, Брен (Bren 
, Braine , Brenus 
) is quite a rare epicene first name. The given name Брен is habitual in Ireland, where it is quite a rare boy's name, Puerto Rico, where it is quite a rare female name, and the Democratic Republic of the Congo, where it is quite a rare epicene name. In absolute terms, it is commonest in the Democratic Republic of the Congo, the United States, and Philippines. Also, Брен is the last name as well as the forename.