Siegersdorf bei Herberstein is a former municipality in the district of Hartberg-Fürstenfeld, in the Austrian state of Styria. It lies in the eastern part of Styria, within the Feistritztal area.
Since 2015, Siegersdorf bei Herberstein has been part of the municipality of Feistritztal, following a structural reform of Styrian municipalities. Before that date it existed as an independent municipality.