See also: Jaén English Etymology Borrowed from Spanish Jaén. Proper noun Jaen (countable and uncountable, plural Jaens) A municipality of Luzon, Philippines; named for the city of Jaén, Spain. A habitational surname from Spanish. Statistics According to the 2010 United States Census, Jaen is the 37544th most common surname in the United States, belonging to 593 individuals. Jaen is most common among Hispanic/Latino (81.62%) individuals. Further reading Hanks, Patrick, editor (2003), “Jaen”, in Dictionary of American Family Names, volume 2, New York: Oxford University Press, →ISBN, page 239. Anagrams Jane, Jean, Jena, jane, jeanWikiwand - on Seamless Wikipedia browsing. On steroids.