Cognomen Serfa (Serfa 
, Cerf 
) , in the entire world, is quite a rare surname. The last name Serfa is habitual in Western Europe, particularly Luxembourg, where it is quite a rare surname, France, and Switzerland. Measured by absolute frequency, this name is the most popular in France, the United States, and Switzerland. Very seldom, Serfa is the forename as well as the last name.