Siegmund III. Christoph Graf von Schrattenbach | |
|---|---|
| Prince-Archbishop of Salzburg | |
 Portrait by Franz Xaver König | |
| Church | Roman Catholic Church |
| Archdiocese | Salzburg |
| See | Cathedral of Saints Rupert and Vergilius |
| Installed | 26 September 1753 |
| Term ended | 16 December 1771 |
| Predecessor | Andreas Jakob von Dietrichstein |
| Successor | Hieronymus von Colloredo |
| Personal details | |
| Born | 28 February 1698 |
| Died | 16 December 1771 (aged 73) Salzburg, Archbishopric of Salzburg, Holy Roman Empire |
| Nationality | Austrian |
Siegmund III Christoph Graf von Schrattenbach, also Sigismundus (28 February 1698 – 16 December 1771) was Prince-Archbishop of Salzburg from 1753 to 1771. Both the composers, Leopold and Wolfgang Mozart served under him.