| jaded | agotado |
| Jadwiga | Hedwig |
| Jadwiga of Poland | Eduviges I de Polonia |
| jaeger | gaviota ladrona |
| Jaffa | Jaffa |
| jag | raja |
| Jagadish Chandra Bose | Jagdish Chandra Bose |
| Jagannath | Jagannātha |
| Jagdpanther | Jagdpanther |
| Jagdpanzer | Jagdpanzer |
| Jagdpanzer IV | Jagdpanzer IV |
| Jagdtiger | Jagdtiger |
| jagged | mellado |
| Jagged Little Pill | Jagged little pill |
| jaggy | mellado |
| Jagiellon dynasty | Dinastía Jogalia |
| Jagiellonian University | Universidad Jagellónica |
| Jagst | Río Jagst |
| jaguar | jaguar |
| Jaguar Racing | Jaguar Racing |
| Jaguar warrior | Guerrero jaguar |
| Jaguares de Chiapas | Jaguares de Chiapas |
| Jaguarão | Yaguarón |
| Jaguarão River | Río Yaguarón |
| Jagulep | Híbridos del género Panthera |
| Jahangir | Jahangir |
| Jahiliyyah | Jahiliyyah |
| Jahn-Teller effect | Efecto Jahn-Teller |
| Jahveh | Yahveh |
| Jahwist | Tradición yavista |
| jail | encarcelar |
| jail sentence | condena de prisión |
| jailbird | criminal reincidente |
| jailbreak | evasión |
| jailer | alcaide |
| jailor | alcaide |
| Jaime Gavilán Martínez | Jaime Gavilán Martínez |
| Jaime Hernandez | Jaime Hernández |
| Jaime Laredo | Jaime Laredo |
| Jaime Lucas Ortega y Alamino | Jaime Ortega Alamino |
| Jaime Milans del Bosch | Jaime Milans del Bosch |
| Jaime Roldos Aguilera | Jaime Roldós Aguilera |
| Jaime Roldós Aguilera | Jaime Roldós Aguilera |
| Jainism | Jainismo |
| Jainosaurus | Jainosaurus |
| Jaipur | Jaipur |
| Jair | Jair |
| Jairzinho | Jairzinho |
| Jajce | Jajce |
| Jaka Lakovič | Jaka Lakovic |
| Jakab Cseszneky | Jakab Cseszneky |
| Jakaltek language | Idioma jacalteco |
| Jakarta | Yakarta |
| Jakarta Stock Exchange | Jakarta Stock Exchange |
| Jakaya Kikwete | Jakaya Mrisho Kikwete |
| Jake Burton Carpenter | Jake Burton |
| Jake Gyllenhaal | Jake Gyllenhaal |
| Jake Tsakalidis | Jake Tsakalidis |
| Jakob Aall | Jacob Aall |
| Jakob Amsler-Laffon | Jakob Amsler-Laffon |
| Jakob Böhme | Jakob Böhme |
| Jakob Frohschammer | Jakob Frohschammer |
| Jakob Meckel | Jacob Meckel |
| Jakob Roggeveen | Jakob Roggeveen |
| Jakob Seisenegger | Jacob Seisenegger |
| Jakob Sveistrup | Jacob Sveistrup |
| Jakob von Uexküll | Jakob Johann von Uexküll |
| Jakow Trachtenberg | Jakow Trachtenberg |
| Jaktens Tid | Jaktens Tid |
| Jakub Sobieski | Jacobo Sobieski |
| Jalal ad-Din Muhammad Balkhi-Rumi | Yalal ad-Din Muhammad Rumi |
| Jalal ad-Din Muhammad Rumi | Yalal ad-Din Muhammad Rumi |
| Jalal Talabani | Yalal Talabani |
| Jalal-Abad | Jalal-Abad |
| Jalal-Abad Province | Provincia de Jalal-Abad |
| Jalalabad | Jalalabad |
| Jalapa | Jalapa |
| Jalapeño | Jalapeño |
| Jalisco | Jalisco |
| jalopy | cafetera |
| Jaluit Atoll | Jaluit |
| jam | obstruir |
| jam jar | jarra |
| jam-full | repleto |
