| català | cat-000 | XXIX |
| English | eng-000 | XXIX |
| suomi | fin-000 | XXIX |
| қазақ | kaz-000 | XXIX |
| English | eng-000 | xxix |
| suomi | fin-000 | xxix- |
| Huilong | cng-005 | xxi yi |
| ISO 639-3 | art-001 | xxk |
| ISO 639-PanLex | art-274 | xxk-000 |
| Türkçe | tur-000 | xx-küçük |
| Glavda | glw-000 | xx̀kʊrɗà |
| ελληνικά | ell-000 | XXL |
| English | eng-000 | XXL |
| français | fra-000 | XXL |
| hrvatski | hrv-000 | XXL |
| English | eng-000 | xx-large |
| ISO 639-3 | art-001 | xxm |
| Peace Corps 2007 Tamazight | tzm-009 | xxmʼm |
| English | eng-000 | XX mode |
| Deutsch | deu-000 | XXO |
| italiano | ita-000 | XX Olimpiade Invernale |
| aršatten č’at | aqc-000 | XXoloSqX~an |
| dižəʼəxon | zav-000 | xx̱on' |
| Malti | mlt-000 | xxotta |
| Malti | mlt-000 | xxottajna |
| Malti | mlt-000 | xxottajt |
| Malti | mlt-000 | xxottajtu |
| Malti | mlt-000 | xxottat |
| Malti | mlt-000 | xxottaw |
| filename extensions | art-335 | xxp |
| TechTarget file types | art-336 | XXP-Brixx-Planner-Plan-File-Brixx-Solutions-Ltd |
| ISO 639-3 | art-001 | xxr |
| filename extensions | art-335 | xxr |
| TechTarget file types | art-336 | XXR-Brixx-Planner-Report-File-Brixx-Solutions-Ltd |
| English | eng-000 | XXS |
| filename extensions | art-335 | xxs |
| English | eng-000 | xx-small |
| TechTarget file types | art-336 | XXS-Sorenson-Squeeze-Settings-File-Sorenson-Media-Inc |
| ISO 639-3 | art-001 | xxt |
| filename extensions | art-335 | xxt |
| ISO 639-PanLex | art-274 | xxt-000 |
| TechTarget file types | art-336 | XXT-Extension-DLL |
| TechTarget file types | art-336 | XXT-Extension-DLL-seldom |
| English | eng-000 | XX th century architecture |
| English | eng-000 | XXth century architecture |
| Peace Corps 2007 Tamazight | tzm-009 | xxu |
| табасаран чӀал | tab-000 | XX~ub |
| cezyas mec | ddo-004 | XX~ul |
| hyw-001 | xxunč | |
| arevelahayeren | hye-002 | xxunǰ |
| català | cat-000 | XXV |
| English | eng-000 | XXV |
| suomi | fin-000 | XXV |
| English | eng-000 | xxv |
| suomi | fin-000 | xxv- |
| català | cat-000 | XXVI |
| English | eng-000 | XXVI |
| suomi | fin-000 | XXVI |
| English | eng-000 | xxvi |
| suomi | fin-000 | xxvi- |
| català | cat-000 | XXVII |
| English | eng-000 | XXVII |
| suomi | fin-000 | XXVII |
| English | eng-000 | xxvii |
| suomi | fin-000 | xxvii- |
| català | cat-000 | XXVIII |
| English | eng-000 | XXVIII |
| suomi | fin-000 | XXVIII |
| English | eng-000 | xxviii |
| suomi | fin-000 | xxviii- |
| italiano | ita-000 | XXVIII Olimpiade |
| hrvatski | hrv-000 | XXVIII. Olimpijske igre - Atena 2004. |
| bosanski | bos-000 | XXVIII Olimpijske igre - Atina 2004. |
| Khvarshi | khv-000 | XXw$E |
| English | eng-000 | XX wool |
| asturianu | ast-000 | XXX |
| brezhoneg | bre-000 | XXX |
| català | cat-000 | XXX |
| čeština | ces-000 | XXX |
| 國語 | cmn-001 | XXX |
| Cymraeg | cym-000 | XXX |
| dansk | dan-000 | XXX |
| tombo so | dbu-001 | XXX |
| Deutsch | deu-000 | XXX |
| English | eng-000 | XXX |
| suomi | fin-000 | XXX |
| français | fra-000 | XXX |
| Frysk | fry-000 | XXX |
| Gàidhlig | gla-000 | XXX |
| Gaeilge | gle-000 | XXX |
| hrvatski | hrv-000 | XXX |
| bahasa Indonesia | ind-000 | XXX |
| italiano | ita-000 | XXX |
| Ixil Nebaj | ixl-001 | XXX |
| 日本語 | jpn-000 | XXX |
| lietuvių | lit-000 | XXX |
| Lushootseed Skagit | lut-000 | XXX |
| Nederlands | nld-000 | XXX |
| bokmål | nob-000 | XXX |
| ਪੰਜਾਬੀ | pan-000 | XXX |
| русский | rus-000 | XXX |
| Spokane | spo-000 | XXX |
| ภาษาไทย | tha-000 | XXX |
| tiếng Việt | vie-000 | XXX |
| Mandawaka | mht-000 | XXX // |
| English | eng-000 | XXx |
| svenska | swe-000 | XXx |
| Universal Networking Language | art-253 | xxx |
| ISO 12620 | art-317 | xxx |
| filename extensions | art-335 | xxx |
| Cimbrian | cim-000 | xxx |
| Deutsch | deu-000 | xxx |
| Yorno-So | dts-001 | xxx |
| English | eng-000 | xxx |
| hrvatski | hrv-000 | xxx |
| Katu | ktv-000 | xxx |
| Náhuatl de Ayotoxco | ncj-001 | xxx |
| Yuwana | yau-000 | xxx |
| Muruwari | zmu-000 | xxx |
| suomi | fin-000 | xxx- |
| svenska | swe-000 | XXx 2 - The Next Level |
| Deutsch | deu-000 | XXx 2 – The Next Level |
| bokmål | nob-000 | xxx_correct-me_xxx |
| bokmål | nob-000 | xxx_correct_me_xxx |
| English | eng-000 | XXXDial |
| français | fra-000 | XXXDial |
| 日本語 | jpn-000 | XXXDial |
| English | eng-000 | XXXena |
| español | spa-000 | Xxxena |
| 普通话 | cmn-000 | XXXG-01D2 Deathscythe Hell |
| 國語 | cmn-001 | XXXG-01D2 Deathscythe Hell |
| magyar | hun-000 | XXX-Holic |
| français | fra-000 | XXXHOLiC |
| 日本語 | jpn-000 | XXXHOLiC |
| 普通话 | cmn-000 | XxxHOLiC |
| 國語 | cmn-001 | XxxHOLiC |
| italiano | ita-000 | XxxHOLiC |
| English | eng-000 | XxxHolic |
| Türkçe | tur-000 | XxxHolic |
| Bahasa Malaysia | zsm-000 | XxxHolic |
| Universal Networking Language | art-253 | xxxi |
| English | eng-000 | xxxi |
| suomi | fin-000 | xxxi |
| brezhoneg | bre-000 | XXXIañ tierniezh Henegipt |
| Universal Networking Language | art-253 | XXX(icl>number) |
| Huilong | cng-005 | xxxi deɑdd |
| italiano | ita-000 | XXXI dinastia egizia |
| français | fra-000 | XXXIe dynastie égyptienne |
| Universal Networking Language | art-253 | xxxii |
| English | eng-000 | xxxii |
| suomi | fin-000 | xxxii |
| Universal Networking Language | art-253 | XXXI(icl>number) |
| Universal Networking Language | art-253 | xxxiii |
| English | eng-000 | xxxiii |
| suomi | fin-000 | xxxiii |
| Universal Networking Language | art-253 | XXXII(icl>number) |
| Universal Networking Language | art-253 | XXXIII(icl>number) |
| Universal Networking Language | art-253 | xxxiv |
| English | eng-000 | xxxiv |
| suomi | fin-000 | xxxiv |
| Universal Networking Language | art-253 | XXXIV(icl>number) |
| TechTarget file types | art-336 | XXX-Singer-XL-embroidery-design-file |
| English | eng-000 | XXx: State of the Union |
| Nederlands | nld-000 | XXx: State of the Union |
| français | fra-000 | XXX: The Next Level |
| bokmål | nob-000 | XXX: The Next Level |
| Deutsch | deu-000 | xXx – Triple X |
| Universal Networking Language | art-253 | xxxv |
| English | eng-000 | xxxv |
| suomi | fin-000 | xxxv |
| Universal Networking Language | art-253 | xxxvi |
| English | eng-000 | xxxvi |
| suomi | fin-000 | xxxvi |
| Universal Networking Language | art-253 | XXXV(icl>number) |
| English | eng-000 | XXXVI Corps |
| Universal Networking Language | art-253 | xxxvii |
| English | eng-000 | xxxvii |
| suomi | fin-000 | xxxvii |
| Universal Networking Language | art-253 | XXXVI(icl>number) |
| Universal Networking Language | art-253 | xxxviii |
| English | eng-000 | xxxviii |
| Universal Networking Language | art-253 | XXXVII(icl>number) |
| Universal Networking Language | art-253 | XXXVIII(icl>number) |
| English | eng-000 | XXX wool |
| Deutsch | deu-000 | XXXX |
| English | eng-000 | XXXX |
| français | fra-000 | XXXX |
| italiano | ita-000 | XXXX |
| 日本語 | jpn-000 | XXXX |
| Nederlands | nld-000 | XXXX |
| русский | rus-000 | XXXX |
| slovenščina | slv-000 | XXXX |
| Türkçe | tur-000 | xxxx sendromu |
| svenska | swe-000 | xxxxx |
| filename extensions | art-335 | xxxxxx |
| TechTarget file types | art-336 | XXXXXX-allTunes-Partial-Download-Mediaservices-Inc |
| ภาษาไทย | tha-000 | XXXโฮลิค |
| 한국어 | kor-000 | Xxx홀릭 |
| 普通话 | cmn-000 | XXX羊毛 |
| English | eng-000 | XXY |
| suomi | fin-000 | XXY |
| français | fra-000 | XXY |
| polski | pol-000 | XXY |
| português | por-000 | XXY |
| filename extensions | art-335 | xxy |
| ภาษาไทย | tha-000 | xxy |
| Universal Networking Language | art-253 | XXY(scn>genetics) |
| TechTarget file types | art-336 | XXY-SPARC-Executable-Script-File |
| English | eng-000 | XXY syndrome |
| English | eng-000 | XXY-syndrome |
| suomi | fin-000 | XXY-syndrooma |
| Huilong | cng-005 | xxɑe leɑ |
| Nxaảmxcín | col-000 | x̣x̣ən’út |
| русский | rus-000 | XX-й век - Фокс |
| فارسی | pes-000 | XX یعنی چی؟ |
| ภาษาไทย | tha-000 | XXหมายความว่ายังไง |
| 日本語 | jpn-000 | XXの意味は何ですか |
| 普通话 | cmn-000 | xx 助理 |
| 普通话 | cmn-000 | (XX国家）妇发基金委员会 |
| 普通话 | cmn-000 | XX是什么意思 |
| 國語 | cmn-001 | XX是什麼意思 |
| 普通话 | cmn-000 | XX机构/开发署联合评价方案 |
| 普通话 | cmn-000 | XX羊毛 |
| Nederlands | nld-000 | X Y |
| Afrikaans | afr-000 | XY |
| ISO 12620 | art-317 | XY |
| Deutsch | deu-000 | XY |
| English | eng-000 | XY |
| suomi | fin-000 | XY |
| français | fra-000 | XY |
| Yorno-So | dts-001 | X≡y |
| Togo-Kan | dtk-002 | [X ∴] [Y ∴] |
| filename extensions | art-335 | xy |
| Goukou | cng-004 | xy |
| Nuo su | iii-001 | xy |
| la lojban. | jbo-000 | xy |
| ภาษาไทย | tha-000 | xy |
| xouʔ˨˧tsieu˦ua˨˦˨ | cdo-003 | xy˦ |
| xouʔ˨˧tsieu˦ua˨˦˨ | cdo-003 | xy˧˩ |
| filename extensions | art-335 | xy3 |
| TechTarget file types | art-336 | XY3-Document-file-XYWrite-III |
| Hulʼqʼumiʼnumʼ | hur-001 | xy~3lak"w~ |
| Halkomelem | hur-002 | xy~3lak"w~ |
| чӑваш | chv-000 | xy~3vely~ |
| Halkomelem | hur-002 | xy~3xy~3k"w~3m |
| Abaza | abq-001 | xy~3z |
| filename extensions | art-335 | xy4 |
| TechTarget file types | art-336 | XY4-Document-file-XYWrite-IV |
| filename extensions | art-335 | xy4v |
| TechTarget file types | art-336 | XY4V-XYWrite-IV-document |
| ISO 639-3 | art-001 | xya |
| Hmoob | hnj-000 | xya |
| Wamdiu | mfm-001 | xya |
| Hmoob Dawb | mww-000 | xya |
| awaete | pak-000 | xya |
| diidza xhon | zad-000 | xya |
| diidxazá | zap-000 | xya |
| dižəʼəxon | zav-000 | xya |
| dižaʼxon | zpq-000 | xya |
| Hildi | mfm-000 | xy~a |
| Wamdiu | mfm-001 | xy~a |
| Margi | mrt-000 | xy~a |
| Chibak | ckl-000 | xyà |
| Kamwe—Fali Kiria | fkk-000 | xyà |
| Kamwe—Higi-Baza | hig-000 | xyà |
| Kamwe—Higi-Nkafa | hig-002 | xyà |
| Hildi | mfm-000 | xyá |
| Margi | mrt-000 | xyá |
| Hmong modern orthography | cqd-001 | xyaa |
| awaete | pak-000 | xyaʼa |
| X̲aat Kíl | hdn-000 | xyáahl |
| Q’eqchi’ | kek-000 | xya'al kab' |
| Q’eqchi’ | kek-000 | xya'al tu' |
| Q’eqchi’ | kek-000 | xya'al u |
| X̱aat kíl | hai-000 | xyáay |
| X̲aat Kíl | hdn-000 | xyáay |
| X̲aat Kíl | hdn-000 | xyáay káw |
| X̲aat Kíl | hdn-000 | xyáaŋs |
| Hmoob | hnj-000 | xyab |
| Farsi | pes-002 | xyâbân |
| Páez | pbb-000 | xʸad |
| Uyghurche | uig-001 | xyadés yultuzlar topi |
| dižəʼəxon | zav-000 | xyag |
| dižaʼxon | zpq-000 | xyag |
| dižəʼəxon | zav-000 | xyag go'oṉ |
| dižəʼəxon | zav-000 | xyagla |
| dižaʼxon | zpq-000 | xyag lambr |
| dižəʼəxon | zav-000 | xyaglat |
| Hmoob | hnj-000 | xya hli ntuj |
| Hmoob Dawb | mww-000 | Xya hlis ntuj |
| awaete | pak-000 | xyakape |
| Mwotlap | mlv-000 | xy~akpw$ |
| Nooksack | nok-000 | xyaL |
| Kwikapa | coc-000 | xyal |
| latine | lat-000 | xyala |
| Q’eqchi’ | kek-000 | xyalbʼal xsahil |
| English | eng-000 | xyAlgebra |
| English | eng-000 | xyALGEBRA file |
| English | eng-000 | xyAlgebra Probabilities File |