Strongyli (Greek: Στρογγυλή, "round"), also known as Strongylo, is an uninhabited Greek islet, located south of cape Goudero on the coast of Lasithi, eastern Crete, in the Libyan Sea. It forms a close group of islands with Koufonisi, Makroulo, Marmaro, and Trachilos.

• List of islands of Greece