Grod Island (Bulgarian: остров Грод, romanized: ostrov Grod, IPA: [ˈɔstrov ˈɡrɔt]) is the southernmost island in the Onogur group off the northwest coast of Robert Island in the South Shetland Islands, Antarctica. The feature is low and ice-free, extending 610 m in east-west direction and 200 m wide. It is separated from Robert Island by a 130 m wide passage.

The island is named after the Bulgar ruler Grod (6th century).

Grod Island is located 810 m north of Misnomer Point and 940 m southwest of Shipot Point. British mapping in 1968 and Bulgarian mapping in 2009.

• Livingston Island to King George Island. Scale 1:200000. Admiralty Nautical Chart 1776. Taunton: UK Hydrographic Office, 1968.
• 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 (Second edition 2010, ISBN 978-954-92032-9-5)
• Antarctic Digital Database (ADD). Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated.

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

• Grod Island. Copernix satellite image

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