Georgios Thomopoulos (Greek: Γεώργιος Θωμόπουλος) was a Greek revolutionary of the Macedonian Struggle, known by the nom de guerre Captain Gogos (Καπετάν Γκόγκος).

From the beginning of the Macedonian Struggle he joined as a soldier in the guerrilla groups that acted in the region.

He soon emerged as a chieftain and set up his own armed group, headed and known by the nickname "Captain Gogos."

He acted with his group in the area of Mount Olympus with the main task of protecting the Greek population from Ottoman aggression, providing security to the supplies that were directed to Macedonia by the Greek state, and the suppression of the Romanian propaganda among the Aromanian population.

After the Young Turk Revolution and the granting of amnesty to the rebels, Thomopoulos was forced to flee with his family which was prosecuted by the Ottoman authorities.