Classifying Scandinavian tunes is an arbitrary activity.  Most of these tunes are played for dances, and the same tune can be used for different dances.  As a practical matter, many musicians group tunes together by dance type (especially for gammaldans, the more recent layer) and/or by region (especially for bygdedans, the older layer).  This is the method I have used.  (See here for a brief discussion of folk music basics.)

Most Scandinavian tunes do not have unique names that can be used to identify them.  Any individual tune may be listed in more than one category, although I have attempted to list each tune only once.  If you can't find something you're looking for, try searching for its number (if you know it) or a relatively unique word from the title or the dance type.

 
   
Engelska, Gånglåt, Ganglat, Marsch, Halling, Humppa, Kadrilj, Långdans, Langdans, Mazurka, Masurka, Menuett, Polonäs, Polonas, Polonaise, Polonesse, Serra, Polka, Pols, Finnskogen, Elverums, Røros, Roros, Trøndelag, Trondelag, Northern Norway, Polska, Älvdalen, Alvdalen, Bingsjö, Bingsjo, Boda, Bohuslän, Bohuslan, Västergötland, Vastergotland, Bondpolska, Finland, Gästrikland, Gastrikland, Hälsingland, Halsingland, Hambo, Jämtland, Jamtland, Leksand, Närke, Narke, Östergötland, Ostergotland, Northern Sweden, Ore, Orsa, Rättvik, Rattvik, Senpolska, Slängpolska, Southern Dalarna, Uppland, Värmland, Varmland, Western Dalarna, Processional, Schottis, Schottische, Shottis, Reinländer, Reinlander, Reinlender, Sekstur, Snurrebock, Sønderhoning, Sonderhoning, Springleik, Folldal, Gudbrandsdal, Oppdal, Vals, Waltz, Special Fiddle Tunings