Blazon:„Gules, an embattled wall Argent, with open gate and open portculli, behind them, three towers Argent issauant with roofs Or, the medial higher and hexagonal, the others round.“  
The arms were officially granted on November 14, 1931, but date from medieval times. The arms are based on the medieval seal of the city, which showed a very typical design of the time; a city wall with three towers.
Das Wappen von Salzburg Zaisberger, F. and Pfeiffer, N. : Salzburger Gemeindewappen. Winter Verlag, Salzburg, 1985 

constructed and added by Jürgen Krause
colors according to FIAV
Unknown authorUnknown author