Koppl is a municipality in the province of Salzburg in Austria with 3409 inhabitants (as of 1 January 2016). The village in the district Flachgau borders on the eastern outskirts of the city of Salzburg. In Nesslgraben between Koppl and Hof bei Salzburg, the Salzburg ring, a motorcycle racing circuit that was used in their past for Formula 2 races located.