Koh Rong's neighbouring islands include Koh Tuich in the south-east, the twin islands of Koh Bong-Po'own (Koh Song-Saa) in the north-east, and Koh Koun and Koh Rong Samloem in the south.
ຫມູ່ເກາະໃກ້ຄຽງ Koh Rong ປະກອບມີເກາະ Tuich ໃນພາກໃຕ້ - ຕາເວັນອອກ, ເກາະຄູ່ແຝດຂອງ Koh Bong-Po'own (Koh Song-Saa) ຢູ່ພາກຕາເວັນອອກສຽງເຫນືອແລະເກາະຄູນແລະ Koh Rong Samloem ຢູ່ພາກໃຕ້.