Theresienmesse (H. XXII/12) is a mass in B-flat major written by Joseph Haydn and named after Maria Theresa of the Two Sicilies, empress consort of Francis II. The empress herself was the soprano soloist at private performances of both The Creation and The Seasons in May 1801 at the Viennese Court. The title does not appear on the autograph score, which is labeled simply with the Latin word "Missa".

Date of composition 1799
First published 1835? ca. or earlier
Type Mass
Tonality B-flat Major
Catalogue Hob. XXII:12
Spoken language Latin
Instruments Chorus/Choir
Orchestra
Links
Autotranslations beta Joseph Haydn: Mass n°12 en si bémol majeur, Hob. XXII:12 "Theresienmesse"
Franz Joseph Haydn: Mass n. 12 in si bemolle maggiore, Hob. XXII:12 "Theresienmesse"
Joseph Haydn: Mass Nr. 12 B-dur, Hob. XXII:12 "Theresienmesse"