| Please note that some information regarding NGOs is only in Greek. |
| NGOs alphabetically |
| Α | Β | Γ | Δ | Ε | Ζ | Η | Θ | Ι | Κ | Λ | Μ | Ν | Ξ | Ο | Π | Ρ | Σ | Τ | Υ | Φ | Χ | Ψ | Ω | All | ||
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | |
| NGOs from I |
| Name | City | Action | |
 ILIACHTIDA |
Νέα Σμύρνη, Αθήνα | » Childs/Young » People with disabilities » Society » Civilization » Literacy-Education » Health » Environment |
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 ITHACA NGO |
Athina | » Society |
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 Institute of Preventive Medicine, Environmental and Occupational Health, Prolepsis |
Marousi | » Health |
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