| 日本語 | jpn-000 |
| 慶応 | |
| العربية | arb-000 | كيو |
| asturianu | ast-000 | Keiō |
| босански | bos-001 | Кеико (1865–1868) |
| 普通话 | cmn-000 | 庆应 (1865–1868) |
| 國語 | cmn-001 | 慶應 |
| English | eng-000 | Keio |
| English | eng-000 | Keiou era |
| français | fra-000 | Keiō (1865–1868) |
| français | fra-000 | Ère Keiō |
| हिन्दी | hin-000 | केईओ (1865–1868) |
| hrvatski | hrv-000 | Keiō (1865.-1868.) |
| bahasa Indonesia | ind-000 | Keiō (1865–1868) |
| にほんご | jpn-002 | けいおう |
| 한국어 | kor-000 | 게이오 (1865 ~ 1868) |
| ລາວ | lao-000 | ຄີໂອ (1865–1868) |
| lietuvių | lit-000 | Keiko (1865–1868) |
| Nederlands | nld-000 | Keiō (1865–1868) |
| русский | rus-000 | Эпоха Кейо (1865–1868) |
| español | spa-000 | Era Keiō |
| српски | srp-000 | Кеико (1865–1868) |
| srpski | srp-001 | Keiko (1865–1868) |
| svenska | swe-000 | Keiō |
| svenska | swe-000 | Keiō (1865–1868) |
| ภาษาไทย | tha-000 | เคโอ (1865–1868) |
| українська | ukr-000 | Кейо (1865–1868) |