| Country | Language | National Speaker Number | Bases for Calculation | Year | Source |
|---|---|---|---|---|---|
| Albania | Greek | 23 485 | / | 2023 | |
| Cyprus | Greek | 733 732 | Language | 2021 | |
| Greece | Ancient Greek | No known L1 speaker | / | / | |
| Greece | Cappadocian Greek | Unknown | Speakers | 2026 (Website accessed) | |
| Greece | Cappadocian Greek | 2 800 | Users | 2015 | |
| Greece | None ('De facto' official language: Greek) | 7 297 827 (given) | Mother Tongue | 1951 | |
| Hungary | Greek | 6 137 (given) | Spoken language | 2022 | |
| Italy | Greek | 5 600 (based on ethnicity) | Users | 2023 | |
| North Macedonia | Greek | 530 | Users | 2022 | |
| Romania | Greek | 1 069 (given) | Mother Tongue | 2021 |
| Country | Language | Endangerment Level | Source |
|---|---|---|---|
| Albania | Greek | 3 (Wider communication) | |
| Cyprus | Greek | 1 (National) | |
| Greece | Cappadocian Greek | Endangered | |
| Greece | Cappadocian Greek | 8b (Nearly extinct) | |
| Greece | None ('De facto' official language: Greek) | 1 (National) | |
| Greece | Ancient Greek | 9 (Second language only) | |
| Hungary | Greek | 4 (Educational) | |
| Italy | Greek | 8a (Moribund) | |
| North Macedonia | Greek | 5* (Dispersed) | |
| Romania | Greek | 5* (Dispersed) |
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