| English | eng-000 | X-frame |
| English | eng-000 | x-frame |
| Deutsch | deu-000 | XFrames |
| English | eng-000 | XFrames |
| français | fra-000 | XFrames |
| polski | pol-000 | XFrames |
| português | por-000 | XFrames |
| català | cat-000 | XFree86 |
| 普通话 | cmn-000 | XFree86 |
| 國語 | cmn-001 | XFree86 |
| Deutsch | deu-000 | XFree86 |
| English | eng-000 | XFree86 |
| français | fra-000 | XFree86 |
| italiano | ita-000 | XFree86 |
| 日本語 | jpn-000 | XFree86 |
| Nederlands | nld-000 | XFree86 |
| bokmål | nob-000 | XFree86 |
| polski | pol-000 | XFree86 |
| português | por-000 | XFree86 |
| русский | rus-000 | XFree86 |
| español | spa-000 | XFree86 |
| svenska | swe-000 | XFree86 |
| čeština | ces-000 | Xfree86 |
| SPDX License List Identifier | art-298 | XFree86-1.1 |
| English | eng-000 | XFree86 License 1.1 |
| English | eng-000 | Xfrog Vegetation File |
| TechTarget file types | art-336 | XFR-Symantec-Anti-Virus-Corporate-Version-Failed-Update-Symantec-Corporation |
| TechTarget file types | art-336 | XFR-Ventura-Publisher-bitmap-editor-font-file |
| TechTarget file types | art-336 | XFR-Xfrog-Vegetation-File-greenworks-organic-software |
| čeština | ces-000 | XFS |
| dansk | dan-000 | XFS |
| Deutsch | deu-000 | XFS |
| English | eng-000 | XFS |
| euskara | eus-000 | XFS |
| français | fra-000 | XFS |
| galego | glg-000 | XFS |
| magyar | hun-000 | XFS |
| italiano | ita-000 | XFS |
| 日本語 | jpn-000 | XFS |
| lietuvių | lit-000 | XFS |
| Nederlands | nld-000 | XFS |
| polski | pol-000 | XFS |
| português | por-000 | XFS |
| русский | rus-000 | XFS |
| slovenčina | slk-000 | XFS |
| español | spa-000 | XFS |
| svenska | swe-000 | XFS |
| filename extensions | art-335 | xfs |
| English | eng-000 | XFT |
| filename extensions | art-335 | xft |
| Uyghurche | uig-001 | xftaliq |
| TechTarget file types | art-336 | XFT-Printer-font-file-24-Pin-ChiWriter |
| TechTarget file types | art-336 | XFT-XML-Forms-Template |
| asturianu | ast-000 | XFU |
| brezhoneg | bre-000 | XFU |
| català | cat-000 | XFU |
| čeština | ces-000 | XFU |
| 國語 | cmn-001 | XFU |
| Deutsch | deu-000 | XFU |
| suomi | fin-000 | XFU |
| français | fra-000 | XFU |
| Frysk | fry-000 | XFU |
| Gàidhlig | gla-000 | XFU |
| hrvatski | hrv-000 | XFU |
| 日本語 | jpn-000 | XFU |
| Nederlands | nld-000 | XFU |
| bokmål | nob-000 | XFU |
| ภาษาไทย | tha-000 | XFU |
| tiếng Việt | vie-000 | XFU |
| Deutsch | deu-000 | X-Fusion |
| English | eng-000 | X-Fusion |
| 日本語 | jpn-000 | XFV-1 |
| 日本語 | jpn-000 | XFV-12 |
| 國語 | cmn-001 | XFV-12戰鬥機 |
| Peace Corps 2007 Tamazight | tzm-009 | xf wayfas |
| English | eng-000 | XFX |
| bokmål | nob-000 | Xfx |
| filename extensions | art-335 | xfx |
| TechTarget file types | art-336 | XFX-Fax-Document-Various |
| 日本語 | jpn-000 | XFY-1 |
| English | eng-000 | XG |
| filename extensions | art-335 | xg |
| 日本語 | jpn-000 | ＸＧ |
| filename extensions | art-335 | xg0 |
| TechTarget file types | art-336 | XG0-Database-Index-or-Paradox-secondary-index-file-format |
| TechTarget file types | art-336 | XG0-Database-Index-Paradox-Secondary-Index |
| English | eng-000 | XG-1 |
| filename extensions | art-335 | xg1 |
| TechTarget file types | art-336 | XG1-Database-index |
| TechTarget file types | art-336 | XG1-Database-Index-Also-XG2-XG3 |
| TechTarget file types | art-336 | XG1-Techno-Toys-XG-909-MIDI-Drum-Machine-file |
| filename extensions | art-335 | xg2 |
| TechTarget file types | art-336 | XG2-Database-Index-Also-XG3 |
| filename extensions | art-335 | xg3 |
| TechTarget file types | art-336 | XG3-Database-Index-Also-XG4 |
| filename extensions | art-335 | xg4 |
| TechTarget file types | art-336 | XG4-Database-Index-Also-XG5-XG6 |
| filename extensions | art-335 | xg5 |
| TechTarget file types | art-336 | XG5-Database-Index-Also-XG6-XG7 |
| filename extensions | art-335 | xg9 |
| TechTarget file types | art-336 | XG9-Techno-Toys-XG-909-MIDI-Drum-Machine-File |
| čeština | ces-000 | XGA |
| Deutsch | deu-000 | XGA |
| English | eng-000 | XGA |
| suomi | fin-000 | XGA |
| galego | glg-000 | XGA |
| español | spa-000 | XGA |
| svenska | swe-000 | XGA |
| nàŋ-dàmá | nzz-000 | X̀ gá |
| ISO 639-3 | art-001 | xga |
| filename extensions | art-335 | xga |
| ISO 639-PanLex | art-274 | xga-000 |
| English | eng-000 | XGA-2 |
| English | eng-000 | XGA/2 Display Adapter |
| Türkçe | tur-000 | XGA/2 Görüntü Birimi Bağdaştırıcısı |
| English | eng-000 | XGA Display Adapter |
| Türkçe | tur-000 | XGA Görüntü Birimi Bağdaştırıcısı |
| English | eng-000 | X-gal |
| English | eng-000 | XGAM-71 Buck Duck |
| italiano | ita-000 | XGAM-71 Buck Duck |
| čeština | ces-000 | X Games |
| Deutsch | deu-000 | X Games |
| English | eng-000 | X Games |
| français | fra-000 | X Games |
| Nederlands | nld-000 | X Games |
| español | spa-000 | X Games |
| svenska | swe-000 | X Games |
| Deutsch | deu-000 | XGameStation |
| English | eng-000 | XGameStation |
| nàŋ-dàmá | nzz-000 | [X gándì] gá |
| Sino-Caucasian | cau-002 | *xGanχV́ |
| diidza xhon | zad-000 | xgashe |
| diidxazá | zap-000 | xgashe |
| dižaʼxon | zpq-000 | xgašj |
| Zapoteco de San Dionisio Ocotepec | ztu-000 | xgaʼts |
| TechTarget file types | art-336 | XGA-Unknown-file-extension |
| Sino-Caucasian | cau-002 | *xgä̆łV́ |
| ISO 639-3 | art-001 | xgb |
| ISO 639-3 | art-001 | xgd |
| ISO 639-PanLex | art-274 | xgd-000 |
| English | eng-000 | X-gear |
| English | eng-000 | x gear |
| Sino-Caucasian | cau-002 | *xGĕ́bV |
| English | eng-000 | XG Encryption Encryption |
| magyar | hun-000 | X generáció |
| English | eng-000 | XGenics eManager Template package for eManager |
| English | eng-000 | XGenics eManager XML definition for eManager process |
| English | eng-000 | XGenics eManager XML definition for UI skins |
| English | eng-000 | XGenics eManager XML form and data for eManager |
| Yorno-So | dts-001 | [X gènɛ̀]-n |
| Yorno-So | dts-001 | [X gènɛ̀] nɛ̀ |
| English | eng-000 | X-Gerät |
| polski | pol-000 | X-Gerät |
| magyar | hun-000 | X. Gergely pápa |
| nàŋ-dàmá | nzz-000 | [X gésì] gìyɛ́ |
| Perge Tegu | djm-004 | [X gèsú] núwⁿó |
| Beni | djm-003 | [X gésù] tíwɛ́ |
| nàŋ-dàmá | nzz-000 | [X gésù] túwɛ́ |
| Sino-Caucasian | cau-002 | *xGéxGV |
| ISO 639-3 | art-001 | xgf |
| ISO 639-PanLex | art-274 | xgf-000 |
| ISO 639-3 | art-001 | xgg |
| Gaeilge | gle-000 | X-gha |
| Gaeilge | gle-000 | x-gha |
| Huzhu Mongghul | mjg-001 | xghai |
| Huzhu Mongghul | mjg-001 | xghala |
| Gàidhlig | gla-000 | x-ghath |
| Gaeilge | gle-000 | X-ghathach |
| Gaeilge | gle-000 | X-ghathaigh |
| Gaeilge | gle-000 | x-ghathanna |
| Gaeilge | gle-000 | X-ghathú |
| Gaeilge | gle-000 | x-ghathú |
| Gaeilge | gle-000 | X-ghathú cíche |
| Malti | mlt-000 | xghir |
| Sino-Caucasian | cau-002 | *xGHwV̆́nĀ |
| Sino-Caucasian | cau-002 | *xGHwVłV́ |
| ISO 639-3 | art-001 | xgi |
| diidza xhon | zad-000 | xgia |
| diidxazá | zap-000 | xgia |
| yàndà-dòm | dym-000 | [X gìdè] bà̀ |
| Yorno-So | dts-001 | X-gí-nɛ́ |
| Togo-Kan | dtk-002 | X gírè |
| Togo-Kan | dtk-002 | [X gírè] |
| nàŋ-dàmá | nzz-000 | [X gírè] gò |
| Perge Tegu | djm-004 | [X gírè] nɔ́: |
| Beni | djm-003 | [X gírè] wìré |
| Yorno-So | dts-001 | [X gìrì:] bǎ:l-ɛ́: |
| Togo-Kan | dtk-002 | X gírⁿí-dù |
| Togo-Kan | dtk-002 | [X gírⁿì] ɛ́:ⁿ |
| Yorno-So | dts-001 | [X gìrù] nɛ̀ |
| Yorno-So | dts-001 | [[X gìrù] nɛ̀] yǎ: |
| English | eng-000 | XGI Technology |
| português | por-000 | XGI Technology |
| Deutsch | deu-000 | XGI Technology Inc. |
| 日本語 | jpn-000 | XGI Technology Inc. |
| Togo-Kan | dtk-002 | [X gíyé] dǒ:rì |
| Togo-Kan | dtk-002 | [X gìyè] tèré: kɔ̀ |
| தமிழ் | tam-000 | X‹gJ |
| polski | pol-000 | XGL |
| svenska | swe-000 | XGL |
| català | cat-000 | Xgl |
| čeština | ces-000 | Xgl |
| 普通话 | cmn-000 | Xgl |
| 國語 | cmn-001 | Xgl |
| Deutsch | deu-000 | Xgl |
| English | eng-000 | Xgl |
| français | fra-000 | Xgl |
| עברית | heb-000 | Xgl |
| magyar | hun-000 | Xgl |
| italiano | ita-000 | Xgl |
| 日本語 | jpn-000 | Xgl |
| Hangungmal | kor-001 | Xgl |
| português | por-000 | Xgl |
| русский | rus-000 | Xgl |
| slovenčina | slk-000 | Xgl |
| español | spa-000 | Xgl |
| Türkçe | tur-000 | Xgl |
| українська | ukr-000 | Xgl |
| ISO 639-3 | art-001 | xgl |
| English | eng-000 | X-glow lamp |
| ISO 639-3 | art-001 | xgm |
| filename extensions | art-335 | xgm |
| ISO 639-PanLex | art-274 | xgm-000 |
| filename extensions | art-335 | xgml |
| filename extensions | art-335 | xgmml |
| English | eng-000 | XGMML File |
| English | eng-000 | XGMML Graph File |
| TechTarget file types | art-336 | XGM-Techno-Toys-XG-909-MIDI-Drum-Machine-File |
| ISO 639 | art-005 | xgn |
| ISO 639-5 | art-015 | xgn |
| filename extensions | art-335 | xgo |
| Beni | djm-003 | [X gódù] tájɛ́ |
| TechTarget file types | art-336 | XGO-GeoConcept-Add-On-GeoConcept-SA |
| Najamba | dbu-000 | [X gòjì] tíbɛ́ |
| Deutsch | deu-000 | X-Golf |
| Bangi | bni-000 | xgöndwa |
| polski | pol-000 | X Gon’ Give It To Ya |
| English | eng-000 | X Gon’ Give It to Ya |
| dižəʼəxon | zav-000 | xgo'o |
| TechTarget file types | art-336 | XGO-Paradox-Database-related-File |
| dižəʼəxon | zav-000 | xgoz |
| dižaʼxon | zpq-000 | xgoz |
| yàndà-dòm | dym-000 | [X gòzù] tíbɛ́ |
| English | eng-000 | XGP |
| français | fra-000 | XGP |
| italiano | ita-000 | XGP |
| Hangungmal | kor-001 | XGP |
| polski | pol-000 | XGP |
| español | spa-000 | XGP |
| svenska | swe-000 | XGP |
| filename extensions | art-335 | xgp |
| TechTarget file types | art-336 | XGP-PicturePlayer-Password-Protected-Files-PicturePlayer |
| ISO 639-3 | art-001 | xgr |
| filename extensions | art-335 | xgr |
| español | spa-000 | X grande |
| ISO 12620 | art-317 | xGraphic |
| TechTarget file types | art-336 | XGR-Graph-Edit-XML-Graph |
| English | eng-000 | X-groove pattern disk |
| filename extensions | art-335 | xgs |
| English | eng-000 | XGS Apple IIGS Emulator 2IMG Disk Image Format |
| English | eng-000 | XGS Apple IIGS emulator disk image format |
| TechTarget file types | art-336 | XGS-Disk-image-file |
| TechTarget file types | art-336 | XGS-XACT-Global-Settings-File |
| English | eng-000 | x > |
| English | eng-000 | x> |
| Yorno-So | dts-001 | X-gú |
| ISO 639-3 | art-001 | xgu |
| ISO 639-PanLex | art-274 | xgu-000 |
| dižəʼəxon | zav-000 | xguag |
| dižaʼxon | zpq-000 | xguague |
| dižəʼəxon | zav-000 | xguaguə |
| dižəʼəxon | zav-000 | Xguan |
| Hànyǔ | cmn-003 | X guāng |
| Hànyǔ | cmn-003 | X-guang |
| Hànyǔ | cmn-003 | X-guāng |
| Hànyǔ | cmn-003 | X guang1 |
| Hànyǔ | cmn-003 | X guang1 ji1 |
| Hànyǔ | cmn-003 | X guang1 jian3 cha2 |
| Hànyǔ | cmn-003 | X guang1 san4 she4 |
| Hànyǔ | cmn-003 | X guang1 xi1 shou1 guang1 pu3 |
| Hànyǔ | cmn-003 | X guang1 zhao4 pian4 |
| Hànyǔ | cmn-003 | X guāng láiyuán |
| dižəʼəxon | zav-000 | Xguao' |
| dižaʼxon | zpq-000 | x̱guaye |
| dižəʼəxon | zav-000 | xguažə' |
| dižəʼəxon | zav-000 | xgüe |
| dižaʼxon | zpq-000 | xgüe |
| dižəʼəxon | zav-000 | xgüe' |
| dižaʼxon | zpq-000 | xgüe' |
| Malti | mlt-000 | X’ġurnata sabiħa |
| Malti | mlt-000 | x'ġurnata sabiħa |
| Togo-Kan | dtk-002 | X gúrɔ́ á: |
| Beni | djm-003 | [X gùrɔ̀] tɔ́ |
| Sino-Caucasian | cau-002 | *xguxgú |
| Mawo | cng-001 | xguə˧˧ |
| Qiāngyǔ Táopínghuà | qxs-004 | xguə̀ |
| Sino-Caucasian | cau-002 | *xGVwV́ |