| Joinder | Addition |
| joiner | snedker |
| joint | artikulation |
| joint debtor | solidarisk skyldner |
| joint implementation | fælles gennemførelse |
| Joint lock | Vægtstang |
| Joint Photographic Expert Gro | JPEG |
| Joint Photographic Experts Gr | JPEG |
| Joint Photographic Experts Group | JPEG |
| Joint-stock-company | Aktieselskab |
| JoJo | JoJo |
| joke | spøge |
| Jokela school shooting | Skuddramaet på Jokelaskolen |
| Jokkmokk Municipality | Jokkmokk kommun |
| Jolyon Wagg | Max Bjævermose |
| Jomo Cosmos | Jomo Cosmos |
| Jomo Kenyatta | Jomo Kenyatta |
| Jomo Kenyatta International Airport | Jomo Kenyatta International Airport |
| Jomsborg | Jomsborg |
| Jomvikings | Jomsviking |
| Jon | Ion |
| Jon Bon Jovi | Jon Bon Jovi |
| Jon Bru | Jon Bru |
| Jon Heidenreich | Jon Heidenreich |
| Jon Lord | Jon Lord |
| Jonah | Jonas |
| Jonas | Jonas |
| Jonathan | Jonathan |
| Jonathan Davis | Jonathan Davis |
| Jonathan Edwards | Jonathan Edwards |
| Jonathan Maccabaeus | Jonathan |
| Jonathan Swift | Jonathan Swift |
| Jondal | Jondal |
| Joni Mitchell | Joni Mitchell |
| Jonny Evans | Jonny Evans |
| Jonny Greenwood | Jonny Greenwood |
| Jonny Wilkinson | Jonny Wilkinson |
| Joost van den Vondel | Joost van den Vondel |
| Jordan | Jordan |
| Jordan Grand Prix | Jordan |
| Jordan River | Jordan |
| Jordanes | Jordanes |
| Jordanhill | Jordanhill jernbanestation |
| Jordanhill railway station | Jordanhill jernbanestation |
| Jordanus | Jordan |
| Jorge Amado | Jorge Amado |
| Jorge Chávez International Airport | Jorge Chávez International Airport |
| Jorge Garcia | Jorge Garcia |
| Jorge Luis Borges | Jorge Luis Borges |
| Jork | York |
| Josef | Josef |
| Josef Albers | Josef Albers |
| Josef Hoffmann | Josef Hoffmann |
| Josef Mengele | Josef Mengele |
| Josef Mysliveček | Josef Myslivecek |
| Josef Strauss | Josef Strauss |
| Josefov | Josefov |
| Josefstadt | Josefstadt |
| Josemaría Escrivá | Josemaría Escrivá |
| Josemaría Escrivá de Balaguer | Josemaría Escrivá |
| Joseon | Korea |
| Josep Borrell | Josep Borrell |
| Josep Jufré | Josep Jufré |
| Joseph | Josef |
| Joseph Addison | Joseph Addison |
| Joseph Babinski | Joseph Babinski |
| Joseph Babiński | Joseph Babinski |
| Joseph Barbera | Joseph Barbera |
| Joseph Conrad | Joseph Conrad |
| Joseph Fourier | Joseph Fourier |
| Joseph Goebbels | Joseph Goebbels |
| Joseph Haydn | Joseph Haydn |
| Joseph Heller | Joseph Heller |
| Joseph John Thomson | Joseph John Thomson |
| Joseph Kabila | Joseph Kabila |
| Joseph Keilberth | Joseph Keilberth |
| Joseph McCarthy | Joseph McCarthy |
| Joseph Priestley | Joseph Priestley |
| Joseph Retinger | Joseph Retinger |
| Joseph Schumpeter | Joseph Schumpeter |
| Joseph Smith | Joseph Smith |
| Joseph Stalin | Josef Stalin |
| Joseph von Fraunhofer | Joseph von Fraunhofer |
| Joseph-Ignace Guillotin | Joseph Ignace Guillotin |
| Josephine | Josefine |
| Josephine Baker | Josephine Baker |
| Josephson effect | Josephson-kontakt |
| Josephus | Josefus |
| Josh Gnar Brainard | Josh Gnar Brainard |
| Josh Homme | Joshua Homme |
| Joshua | Josva |
| Joshua Reynolds | Joshua Reynolds |
| Josip Broz Tito | Josip Broz Tito |
| Josquin des Prez | Josquin Desprez |
| Joss Stone | Joss Stone |
| Jostedalsbreen | Jostedalsbræen |
| Jostedalsbreen National Park | Jostedalsbreen nationalpark |
| Jostein Gaarder | Jostein Gaarder |
| Josué Anunciato de Oliveira | Josva |
| José Alberto Benítez | José Alberto Benítez |
| José Antonio Conde | José Antonio Conde |
| José Antonio González | José Antonio González |
| José Antonio Reyes | José Antonio Reyes |
| José Carioca | José Carioca |
| José González | José González |
| José Joaquín de Olmedo International Airport | Simón Bolívar International Airport Guayaquil |
| José Joaquín Rojas | José Joaquín Rojas |
| José Júnior | José Luiz Guimarães Sanabio Júnior |
| José Luis Rodríguez Zapatero | José Luis Rodríguez Zapatero |
| José Luis Rubiera | José Luis Rubiera |
| José Manuel Barroso | Jose Manuel Durao Barroso |
| José Martí | José Martí |
| José María Aznar | José María Aznar |
| José María Gutiérrez | Guti |
| José Millán Astray | José Millán Astray |
| José Mourinho | José Mourinho |
| José Ramos Horta | José Ramos Horta |
| José Raúl Capablanca | José Raúl Capablanca |
| José Roberto da Silva Júnior | José Roberto da Silva Júnior |
| José Rujano | José Rujano |
| José Saramago | José Saramago |
| José Vicente García | José Vicente García Acosta |
| José Ángel Gómez Marchante | José Ángel Gómez Marchante |
| Joséphine de Beauharnais | Josefine |
| Jota | Iota |
| Jotun | Jætte |
| Jotunheimen National Park | Jotunheimen nationalpark |
| Jotuns | Jætte |
| joule | joule |
| Joulupukki | Julebuk |
| journal | tidsskrift |
| Journal des sçavans | Journal des Savants |
| journalism | journalistik |
| Journalism sourcing | Springvand |
| journalist | journalist |
| journey | rejse |
| Journey to the West | Rejsen mod Vest |
| Joutseno | Joutseno |
| Jove | Jupiter |
| Jovian planet | Gaskæmpe |
| joy | lykke |
| Joy Division | Joy Division |
| Joyce | Joyce |
| joystick | rat |
| JPEG | JPEG |
| JScript | JScript |
| Juan | Renminbi |
| Juan Carlos I of Spain | Juan Carlos af Spanien |
| Juan Manuel Fangio | Juan Manuel Fangio |
| Juan Manuel Gárate | Juan Manuel Gárate |
| Juan Rodríguez Cabrillo | Juan Rodríguez Cabrillo |
| Juan Román Riquelme | Juan Román Riquelme |
| Juan Sebastián Elcano | Juan Sebastián Elcano |
| Juan Silveira dos Santos | Renminbi |
| Juande Ramos | Juande Ramos |
| Juanes | Juanes |
| Juarez | Ciudad Juárez |
| Juba | Juba |
| Jubal Pomp | Næbhøj |
| Jubba River | Juba |
