Avren Rocks (Bulgarian: Скали Аврен, romanized: 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 260 m (280 yd) in north–south direction and is 150 m (160 yd) wide. The rocks were first mapped in 2008 by a Bulgarian team. They are named after two settlements in Varna and Kardzhali provinces situated in northeastern and southeastern Bulgaria respectively.

• Composite Antarctic Gazetteer
• List of Antarctic islands south of 60° S
• SCAR
• Territorial claims in Antarctica

• L.L. Ivanov et al., Antarctica: Livingston Island and Greenwich Island, South Shetland Islands (from English Strait to Morton Strait, with illustrations and ice-cover distribution), Scale 1: 100000 map, Antarctic Place-names Commission of Bulgaria, Ministry of Foreign Affairs, Sofia, 2005
• L.L. Ivanov. Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands. Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009. ISBN 978-954-92032-6-4

• Avren Rocks. SCAR Composite Antarctic Gazetteer
• Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission. (details in Bulgarian, basic data in English)

• Avren Rocks. Copernix satellite image

This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.