Jagerberg is a municipality in the district of Südoststeiermark, in the Austrian state of Styria. It lies in the southeastern part of the country, within the region known as Southeast Styria.
The municipality covers an area of 29.03 square kilometres. As of 1 January 2023, it had a combined population of 1,629, giving it a low population density typical of the rural municipalities in this part of Styria.