Bärenberg, Mountain summit in Hietzing, Austria

Bärenberg is a 434-metre summit in Vienna's 13th district, Hietzing, within the Lainzer Tiergarten. Its largely wooded dome is unusually round, and no marked trail leads to the top. The mountain consists of sandstone and belongs to the Vienna Woods, the northeastern spur of the Eastern Alps.

The Bärenberg appears as Barn Berg in the 1819 Franziszeische Steuerfassion, the Habsburg tax register drawn up for the Vienna area. The name may come from Middle High German bër, bear, or from barn, meaning bare, which would describe a summit without trees. The mountain lies in the Lainzer Tiergarten, a former imperial hunting preserve.

The name was recorded in 1819 as "Barn Berg". Two readings are possible: from Middle High German bër, bear, or from barn, meaning bare, which would describe a treeless summit. The second reading conflicts with the dense forest that covers the peak today.

No marked trail leads to the rounded, forested summit of Bärenberg, so the top is reached only off-path. Hikers instead pass the northern slope on City Hiking Trail 4, which continues to the much-visited Kaltbründlberg, the Hirschgstemm shelter and northwards. Access to the Lainzer Tiergarten is via the Laaber Tor and Dianator, a few kilometres away past the Diebsgraben in the Deutschordenswald.

No marked trail leads to the summit, whose unusually round dome shape is largely wooded. The sandstone hill lies in the west of the Lainzer Tiergarten, in the Auhof cadastral district on Vienna's green border with Laab im Walde.