Loupežnická jeskyně, Protected cave system in Ústí nad Labem, Czech Republic.

Loupežnická jeskyně is a fissure cave on the eastern edge of Ústí nad Labem, in the steep slope of Zámecký vrch. It formed in phonolite when blocks of fractured rock shifted, and it is protected as a natural monument together with its bats and fire salamanders.

The cave is a fissure formed by the shifting of blocks of fractured phonolite on the steep slope of Zámecký Hill. It is protected as a natural monument, managed by the České středohoří Protected Landscape Area administration, for its geology and its bat and fire salamander populations.

The cave shelters bats and the fire salamander (Salamandra salamandra), species whose protection is the stated reason the site is a natural monument. The area is managed by the Administration of the České středohoří Protected Landscape Area, and the name Loupežnická ("robber's") cave recalls local robber-knight tales linked to nearby Varta castle ruins.

The cave is secured with metal gates and requires special permission to enter in order to protect the resident bat colonies. Visitors interested in viewing it should arrange access in advance through local authorities, as entry is strictly limited.

The cave is a fissure formed by the shifting of blocks of phonolite, a volcanic rock, on the steep slope of Zámecký Hill. Its name, meaning Robber's Cave, links it to the nearby ruins of Varta Castle, also called Loupežnický hrad.