| Lëtzebuergesch | ltz-000 |
| Quod erat demonstrandum | |
| العربية | arb-000 | وهو المطلوب إثباته |
| català | cat-000 | Q.E.D. |
| čeština | ces-000 | Q.E.D. |
| 普通话 | cmn-000 | Q.E.D. |
| 國語 | cmn-001 | Q.E.D. |
| dansk | dan-000 | Quod erat demonstrandum |
| Deutsch | deu-000 | Quod erat demonstrandum |
| eesti | ekk-000 | M.O.T.T. |
| English | eng-000 | Q.E.D. |
| Esperanto | epo-000 | Q.E.D. |
| suomi | fin-000 | M.O.T. |
| français | fra-000 | CQFD |
| galego | glg-000 | QED |
| magyar | hun-000 | Quod erat demonstrandum |
| íslenska | isl-000 | Það sem sanna átti |
| italiano | ita-000 | Come volevasi dimostrare |
| 日本語 | jpn-000 | Q.E.D. |
| Hangungmal | kor-001 | Q.E.D. |
| latviešu | lvs-000 | Q.E.D. |
| Nederlands | nld-000 | Quod erat demonstrandum |
| bokmål | nob-000 | Q.E.D. |
| polski | pol-000 | Q.e.d. |
| português | por-000 | Quod erat demonstrandum |
| română | ron-000 | Quod erat demonstrandum |
| русский | rus-000 | Q.E.D. |
| slovenščina | slv-000 | Q.E.D. |
| español | spa-000 | Quod erat demonstrandum |
| srpski | srp-001 | Q.E.D. |
| svenska | swe-000 | Q.E.D. |
| ภาษาไทย | tha-000 | Q.E.D. |
| Türkçe | tur-000 | QED |