| Cymraeg | cym-000 |
| Swydd Hertford | |
| български | bul-000 | Хартфордшър |
| català | cat-000 | Hertfordshire |
| 普通话 | cmn-000 | 赫特福德郡 |
| 國語 | cmn-001 | 赫特福德郡 |
| Kernowek | cor-000 | Hertfordshire |
| dansk | dan-000 | Hertfordshire |
| Deutsch | deu-000 | Hertfordshire |
| eesti | ekk-000 | Hertfordshire |
| English | eng-000 | Hertfordshire |
| Esperanto | epo-000 | Hertfordshire |
| euskara | eus-000 | Hertfordshire |
| suomi | fin-000 | Hertfordshire |
| français | fra-000 | Hertfordshire |
| हिन्दी | hin-000 | हर्टफ़र्डशायर |
| Ido | ido-000 | Hertfordshire |
| íslenska | isl-000 | Hertfordshire |
| italiano | ita-000 | Hertfordshire |
| 日本語 | jpn-000 | ハートフォードシャー |
| Lëtzebuergesch | ltz-000 | Hertfordshire |
| latviešu | lvs-000 | Hārtfordšīra |
| Nederlands | nld-000 | Hertfordshire |
| bokmål | nob-000 | Hertfordshire |
| occitan | oci-000 | Hertfordshire |
| polski | pol-000 | Hertfordshire |
| português | por-000 | Hertfordshire |
| română | ron-000 | Hertfordshire |
| русский | rus-000 | Хартфордшир |
| slovenčina | slk-000 | Hertfordshire |
| español | spa-000 | Hertfordshire |
| svenska | swe-000 | Hertfordshire |
| Volapük | vol-000 | Hertfordshire |