| Joël Bats | Joël Bats |
| Joël Lautier | Joël Lautier |
| Jošanička Banja | Jošanička Banja |
| Jože Plečnik | Jože Plečnik |
| JP | JP |
| JPEG | JPEG |
| JPMorgan Chase | JPMorgan Chase |
| JPMorgan Chase Tower | JPMorgan Chase Tower |
| Jpop | J-pop |
| JR | JR |
| JR Central | Central Japan Railway Company |
| JR Est | East Japan Railway Company |
| JR Hokkaido | Hokkaido Railway Company |
| JR Ouest | West Japan Railway Company |
| JR Sanyo | Sanyō Main Line |
| JS | JS |
| JS Kabylie | JS Kabylie |
| JSA | Joint Security Area |
| JScript | JScript |
| JTAG | Joint Test Action Group |
| JU | JU |
| Ju-jitsu | Jujutsu |
| Ju-on | Ju-on |
| Juan | Juan Silveira dos Santos |
| Juan Aguilera | Joan Aguilera |
| Juan Alberto Andreu | Juan Alberto Andreu |
| Juan Alberto Schiaffino | Juan Alberto Schiaffino |
| Juan Antonio de Vizarrón y Eguiarreta | Juan Antonio de Vizarrón y Eguiarreta |
| Juan Antonio Ríos | Juan Antonio Ríos |
| Juan Antonio Samaranch | Juan Antonio Samaranch |
| Juan Barbas | Juan Barbas |
| Juan Bautista Aznar-Cabañas | Juan Bautista Aznar Cabañas |
| Juan Belmonte | Juan Belmonte |
| Juan Boscán Almogáver | Juan Boscán Almogáver |
| Juan Cabanilles | Juan Cabanilles |
| Juan Caramuel y Lobkowitz | Juan Caramuel y Lobkowitz |
| Juan Carlos Ferrero | Juan Carlos Ferrero |
| Juan Crisóstomo de Arriaga | Juan Crisóstomo Arriaga |
| Juan de Espinosa | Juan Bautista de Espinosa |
| Juan de Grijalva | Juan de Grijalva |
| Juan de la Cosa | Juan de la Cosa |
| Juan de la Cueva | Juan de la Cueva |
| Juan De Marcos González | Juan de Marcos González |
| Juan de Nova | Juan de Nova Island |
| Juan de Pablo Bonet | Juan Pablo Bonet |
| Juan de Roelas | Juan de las Roelas |
| Juan del Encina | Juan del Encina |
| Juan Diego Cuauhtlatoatzin | Juan Diego |
| Juan Diego Florez | Juan Diego Flórez |
| Juan Donoso Cortés | Juan Donoso Cortés |
| Juan Eduardo Esnáider | Juan Esnáider |
| Juan Emilio Bosch y Gaviño | Juan Bosch |
| Juan Fernandez Navarette | Juan Fernández Navarrete |
| Juan Fernández de Heredia | Juan Fernández de Heredia |
