Johann Weiß
Johann Weiß may refer to:
- Johann [Baptist Weiß (priest)], Benedictine priest, teacher and playwright
- Johann Baptist Weiss, German historian
- Johann Baptist Weiß, Austrian schoolmaster, organist and early tutor of Anton Bruckner
- Johann Jacob Weiss, composer of lute music
- Johann Sigismund Weiss, the originally attributed composer of Flute sonata in D major (HWV 378)
- Johann Weiss, see Pirate Party of Canada
- Johann Weiss, Viennese lawyer and WW1 veteran, executed by Eduard Roschmann