Cleonaeus

{{Short description|Ancient military commander from Rhodes}}

Cleonaeus ({{langx|grc|Κλεωναῖος}}) was a Rhodian admiral. He was second-in-command to Theophiliscus at the Battle of Chios, and he became commander after Theophilscius died from his wounds. As he was sailing back to Rhodes, he was defeated by Philip V of Macedon at the Battle of Lade.