Masyas

 ( 1st-century Germanic People ) 

Masyas, Masyus or Masyos () was a King of the Semnones () in the 1st century. The Semnones were a Germanic peoples tribe, part of the Suebi. Cassius Dio writes that he at one point visited Roman Empire Roman emperor Domitian along with the priestess Ganna.

• Felix Dahn: Masyos. In: Allgemeine Deutsche Biographie (ADB). Band 20, Duncker & Humblot, Leipzig 1884, S. 581.