OSM tag name:en=Hydra matches Hydra in these Wikidata fields:
OSM tag name:fr=Hydra matches Hydra in these Wikidata fields:
OSM tag name:hu=Ídra matches Ídra in these Wikidata fields:
OSM tag name:hu=Ídra matches Idra in these Wikidata fields:
OSM tag name=Ύδρα matches Ύδρα in these Wikidata fields:
OSM tag name:el=Ύδρα matches Ύδρα in these Wikidata fields:
OSM tag int_name=Ydra matches Ydra in these Wikidata fields:
OSM tag alt_name:fr=Ýdra matches Ydra in these Wikidata fields:
OSM tag name:hu=Ídra matches Идра in these Wikidata fields:
OSM tag name:hu=Ídra matches Իդրա in these Wikidata fields:
OSM tag name:hu=Ídra matches Ідра in these Wikidata fields:
OSM tag int_name=Ydra matches Ýdra in these Wikidata fields:
OSM tag alt_name:fr=Ýdra matches Ýdra in these Wikidata fields:
OSM tag name:en=Hydra matches Hydra Island in these Wikidata fields:
OSM tag name:fr=Hydra matches Hydra Island in these Wikidata fields:
OSM tag name:hu=Ídra matches İdra in these Wikidata fields:
OSM tag name:en=Hydra matches Hydra, Gresya in these Wikidata fields:
OSM tag name:fr=Hydra matches Hydra, Gresya in these Wikidata fields:
OSM tag name:en=Hydra matches Hydra (island) in these Wikidata fields:
OSM tag name:fr=Hydra matches Hydra (island) in these Wikidata fields:
OSM tag name=Ύδρα matches Υδρα in these Wikidata fields:
OSM tag name:el=Ύδρα matches Υδρα in these Wikidata fields:
OSM tag name:ru=Гидра matches Гідра in these Wikidata fields:
| Car-free islands of Europe | place=islet, place=island, boundary=administrative, admin_level |
| Populated places in Islands (regional unit) | place=islet, place=island, landuse=residential, boundary=administrative, place, admin_level |