Globally, Lahn (Lahn 
, لاهن 
) is a rare dominantly girly, but infrequently boy's forename. The first name Lahn is habitual in Sudan, where it is a rare girly name, Egypt, where it is a rare epicene name, and Syria, where it is a rare female name. Measured by absolute frequency, it is the most numerous in Northern Africa, particularly Egypt, Sudan, and Algeria. Likewise, Lahn is the last name as well as the forename.