| français | fra-000 |
| Hydra | |
| Afrikaans | afr-000 | Hydra |
| العربية | arb-000 | بلدية حيدرة |
| العربية | arb-000 | شجاع |
| العربية | arb-000 | هِيدْرَا |
| беларуская | bel-000 | Гідра |
| bosanski | bos-000 | Hidra |
| brezhoneg | bre-000 | Hydra |
| български | bul-000 | Хидра |
| català | cat-000 | Hidra |
| català | cat-000 | Hydra |
| català | cat-000 | Illa d’Hidra |
| čeština | ces-000 | Hydra |
| 普通话 | cmn-000 | 冥卫三 |
| 國語 | cmn-001 | 冥衛三 |
| lingua corsa | cos-000 | Idra |
| Cymraeg | cym-000 | Hydra |
| dansk | dan-000 | Hydra |
| Deutsch | deu-000 | Hydra |
| eesti | ekk-000 | Hydra |
| ελληνικά | ell-000 | Ύδρα |
| English | eng-000 | Hydra |
| English | eng-000 | Snake |
| Esperanto | epo-000 | Hidro |
| suomi | fin-000 | Hydra |
| suomi | fin-000 | Vesikäärme |
| suomi | fin-000 | hydra |
| français | fra-000 | Hydre |
| français | fra-000 | Hydre mâle |
| français | fra-000 | Tuscania |
| Gaeilge | gle-000 | Hydra |
| galego | glg-000 | Hydra |
| yn Ghaelg | glv-000 | Hydra |
| Srpskohrvatski | hbs-001 | Hidra |
| עברית | heb-000 | והידרה |
| हिन्दी | hin-000 | हाएड्रा |
| hrvatski | hrv-000 | Hidra |
| magyar | hun-000 | Hidra |
| magyar | hun-000 | Hydra |
| magyar | hun-000 | Idra |
| արևելահայերեն | hye-000 | Հիդրա |
| Ido | ido-000 | S/2005 P 1 |
| bahasa Indonesia | ind-000 | Hydra |
| íslenska | isl-000 | Hýdra |
| italiano | ita-000 | Idra |
| 日本語 | jpn-000 | スネーク川 |
| 日本語 | jpn-000 | ヒドラ |
| 日本語 | jpn-000 | ヒュドラ |
| 日本語 | jpn-000 | 海蛇座 |
| 한국어 | kor-000 | 히드라 |
| latine | lat-000 | Hydra |
| Latina Nova | lat-003 | Hydra |
| lietuvių | lit-000 | Hidra |
| lengua lumbarda | lmo-000 | Hydra |
| latviešu | lvs-000 | Hidra |
| मराठी | mar-000 | हायड्रा |
| Plattdüütsch | nds-000 | Hydra |
| Plattdüütsch-Neddersassisch | nds-002 | Hydra |
| Nederlands | nld-000 | Hydra |
| nynorsk | nno-000 | Ýdra i Dei saroniske øyane |
| bokmål | nob-000 | Hydra |
| فارسی | pes-000 | هیدرا |
| polski | pol-000 | Hydra |
| polski | pol-000 | Hydra lernejska |
| português | por-000 | Hidra |
| português | por-000 | Hidra de Lerna |
| português | por-000 | Hydra |
| română | ron-000 | Hydra |
| русский | rus-000 | Ги́дра |
| русский | rus-000 | Гидра |
| русский | rus-000 | Идра |
| slovenčina | slk-000 | Hydra |
| slovenščina | slv-000 | Hidra |
| español | spa-000 | Hidra |
| svenska | swe-000 | Hydra |
| ภาษาไทย | tha-000 | กลุ่มดาวงูน้ำ |
| ภาษาไทย | tha-000 | ไฮดรา |
| Türkçe | tur-000 | Hydra |
| українська | ukr-000 | Гідра |
| tiếng Việt | vie-000 | Hydra |
| Winaray | war-000 | Hydra |