Caving -canyoning clubs
- Hellenic Speleological Society – Department of Crete
- Naturalists Climbing Club of SIteia
- Hellenic Speleological & Exploration Club
- SELAS Caving Club
- Thiseas
- Proteas -Thessaloniki Caving
- Hellenic Speleological Society
- Samos Caving Club ” O Efpalinos”
- Hellenic Federation of Speleology
- Cretan Caving Club SPOK
- Thessalic Society of Caving Research “O Cheiron”
- Taygetos Panonas Caving Club “O Poseidon”
Touristic cave administrators
- Aggitis River Cave, Drama
- Cave of Agia Sofia, Kythira
- Gerontospilios of Melidoni, Rethymno
- Dictaion Antron, Lasithi
- Idaion Antron, Rethymno
- Kastania cave, Lakonia
- Cave of Agio Galas, Chios
- Cave of Agios Georgios, Kilkis
- Cave of Alistrati, Serres
- Diros Caves, Lakonia
- Cave of Milatos, Lasithi
- Cave of Koutouki, Peania Attiki
- Cave of Perama, Ioannina
- Cave of Patralona, Chalkidiki
- Cave of Zoniana or Sfendoni Trypa, Rethymno
- Cave of Lakes, Achaia
- Cave of the Dragon, Kastoria
Legal status and administrative authorities
- Ephorate of Palaeoanthropology and Speleology – Ministry of Culture and Sports
- Ministry of Environment and Energy
International organizations
- Speleogenesis scientific network
- European Speleological Federation
- UNEP/EUROBATS
- Croatian biospeleological society