Siegmund von Hausegger (16 August 1872 – 10 October 1948) was an Austrian composer and conductor.
Siegmund was born in Graz, the son of Friedrich von Hausegger (1837-1899), a lawyer and writer on music. According to Siegmund's own account, Friedrich was "one of the first in Austria to recognize the greatness of Richard Wagner and to exert himself to the utmost in propagating his music and his ideas". According to one account, the young von Hausegger may have been made the vehicle of his critic-father's ideals. Siegmund studied music initially under his father, and a strong Wagnerian tinge is found in his own compositions, which included masses, operas and symphonic poems as well as many choruses and songs.
At the age of nineteen, von Hausegger composed a Mass for chorus and orchestra that he described as "my first serious composition". Originally intended to be performed at his college, the work proved too challenging for his fellow-pupils. His father helped him arrange a private performance before an invited audience. This event marked von Hausegger's debut both as a conductor and as a composer.
He was talked of in Austria and Germany in the first years of the 20th century as one of the next great talents after Strauss and Mahler, but despite several successes before the First World War his music was forgotten when his full-blooded post-Wagnerian style went out of fashion. In 1922 the German critic Adolf Weissmann wrote:
The symphonic poetry of Siegmund von Hausegger is full of Wagner. His work originates in a resolute will to truth and honesty, but outworn theory cripples his imagination.
Hausegger conducted orchestras in many German and Austrian cities including Graz; Munich, where he shared the conductorship of the Kaim Orchestra with Felix Weingartner; Frankfurt (1904-6); Berlin (Blüthner Orchestra, 1910–15); and Hamburg (1910-20). After the First World War he served as conductor of the Scottish Orchestra in Glasgow and Edinburgh before returning to Munich as conductor of the Munich Philharmonic and president of the Munich Academy of Music. In 1920 he succeeded Max von Schillings as president of the Allgemeiner Deutscher Musikverein.