Avren Rocks (, ‘Skali Avren’ ska-'li a-'vren) are three adjacent rocks situated in the interior of Micalvi Cove in the south extremity of Robert Island, South Shetland Islands. The group extends in north-south direction and is wide. The rocks were first mapped in 2008 by a Bulgarian team. They are named after the two settlements of Avren situated in northeastern and southeastern Bulgaria respectively.