This list includes revolutionary organizations aimed at liberating and unifying Greek-inhabited territories into the historical national state of Greece.
| Organization | Active | Notes | Image | ||||
| Ellinoglosso Xenodocheio | 1814 | Established in Paris. Provided education for Greeks and prepared for a future struggle against Ottoman rule. | |||||
| Filiki Etaireia | 1814–21 | Established in Odessa. Organizer of the Greek War of Independence. | |||||
| Ethniki Etaireia | 1894–96 | Established in Athens. Advocated for the liberation of all Greek-inhabited territories. Considered to be responsible for the start of the Greco-Turkish War (1897). | |||||
| Hellenic Macedonian Committee | 1890s–1908 | Established in Athens. Headquartered in the Greek consulate of Thessaloniki. Coordinator of Greek efforts during the Macedonian Struggle. | |||||
| Panepirotic Assembly | 1914 | Established in Argyrokastro. Declared independence from Albania and the creation of the Autonomous Republic of Northern Epirus. | |||||
| EOKA | 1955–59 | Established in British Cyprus. Waged a guerilla war against the British to achieve union with Greece, causing the Cyprus Emergency. Led to the independence of Cyprus. | |||||
| EOKA B | 1971–74 | Established in the Republic of Cyprus. Involved in the 1974 Cypriot coup d'état and the Turkish invasion of Cyprus. |