Male choir of former members of the Vienna Boys' Choir, since 1952.

In addition to its joint work with the Vienna Boys' Choir, the Chorus Viennensis is dedicated to the cultivation of male choral literature of all stylistic epochs.

Many of the members of the association Chorus Viennensis / Choralschola der Wiener Hofburgkapelle (Schola of the Vienna Imperial Chapel), which is made up exclusively of former members of the Vienna Boys' Choir, sing in both ensembles.