Regianum Peak (Bulgarian: връх Регианум, ‘Vrah Regianum’ \'vr&h re-gi-'a-num\) is the mostly ice-covered peak of elevation 900 m in the northeast part of Stribog Mountains on Brabant Island in the Palmer Archipelago, Antarctica. It surmounts Paré Glacier to the north and Laënnec Glacier to the south, and has its northern foothills connected to Stavertsi Ridge to the northeast by Viamata Saddle.
The peak is named after the ancient Roman fortress of Regianum in Northwestern Bulgaria.
Regianum Peak is located at 64°10′12″S 62°14′39″W / 64.17000°S 62.24417°WCoordinates: 64°10′12″S 62°14′39″W / 64.17000°S 62.24417°W, which is 2.27 km east by north of Blesna Peak, 4.25 km southwest of Mount Cabeza, 7.7 km west-northwest of Petroff Point and 5.9 km north-northwest of Opizo Peak. British mapping in 1980 and 2008.