| Japetus | Japet |
| Japheth | Jafet |
| Japhetic theory | Marryzm |
| Jaqueline | Żaklina |
| jar | słoik |
| Jar Jar Binks | Jar Jar Binks |
| Jar of Flies | Jar of Flies |
| Jarama | Jarama |
| Jaramijó | Jaramijó |
| Jardin du Luxembourg | Ogród Luksemburski |
| jardiniere | kwietnik |
| Jared | Jered |
| Jared Diamond | Jared Diamond |
| Jared Leto | Jared Leto |
| Jared Padalecki | Jared Padalecki |
| jargon | żargon |
| Jargon File | Jargon File |
| Jari Litmanen | Jari Litmanen |
| Jarilo | Jaryło |
| Jariyan al Batnah | Prowincja Dżarijan al-Batna |
| Jarkko Oikarinen | Jarkko Oikarinen |
| Jarl | Generał |
| Jarl in Sweden | Earl |
| Jarlsberg cheese | Jarlsbergost |
| Jarmen | Jarmen |
| Jarno Trulli | Jarno Trulli |
| Jarocin | Jarocin |
| Jarocin County | Powiat jarociński |
| Jarome Iginla | Jarome Iginla |
| Jaromir of Bohemia | Jaromir Przemyślida |
| Jaromír Blažek | Jaromír Blažek |
| Jaromír Jágr | Jaromír Jágr |
| Jaromír Nohavica | Jaromír Nohavica |
| Jaron Lanier | Jaron Lanier |
| Jarosite | Jarosyt |
| Jaroslav Hašek | Jaroslav Hašek |
| Jaroslav Heyrovský | Jaroslav Heyrovský |
| Jaroslav Seifert | Jaroslav Seifert |
| Jaroslav Věšín | Jarosław Weszin |
| Jarosław | Jarosław |
| Jarosław County | Powiat jarosławski |
| Jarosław Dąbrowski | Jarosław Dąbrowski |
| Jarosław Iwaszkiewicz | Jarosław Iwaszkiewicz |
| Jarosław Kaczyński | Jarosław Kaczyński |
| Jarovce | Jarovce |
| Jarvis | Dalekie Wyspy Mniejsze Stanów Zjednoczonych |
| Jarvis Island | Jarvis |
| Jasc Software | JASC Software |
| Jascha Heifetz | Jascha Heifetz |
| Jasenovac concentration camp | Jasenovac |
| Jasenovac municipality | Jasenovac |
| Jasielda River | Jasiołda |
| Jasień | Jasień |
| Jasieńczyk coat of arms | Jasieńczyk |
| Jaskinia Wielka Śnieżna | Jaskinia Wielka Śnieżna |
| Jasmila Žbanić | Jasmila Žbanić |
| jasmine | jaśmin |
| Jasmonate | Kwas jasmonowy |
| Jasmonic acid | Kwas jasmonowy |
| Jasna Góra Monastery | Jasna Góra |
| Jason | Jazon |
| Jason Arnott | Jason Arnott |
| Jason Donovan | Jason Donovan |
| Jason Freese | Jason Freese |
| Jason Kay | Jay Kay |
| Jason Lamy-Chappuis | Jason Lamy-Chappuis |
| Jason Lee | Jason Lee |
| Jason McCaslin | Jason McCaslin |
| Jason Momoa | Jason Momoa |
| Jason Newsted | Jason Newsted |
| Jason Patric | Jason Patric |
| Jason Reso | Jason Reso |
| Jason Statham | Jason Statham |
| Jason X | Jason X |
| Jason Čulina | Jason Čulina |
| Jasov | Jasov |
| jasper | jaspis |
| Jasper County | Hrabstwo Jasper |
| Jasper Fforde | Jasper Fforde |
| Jasper Johns | Jasper Johns |
| Jasper National Park | Park Narodowy Jasper |
| Jassic people | Jazygowie |
| Jastarnia | Jastarnia |
| Jastorf culture | Kultura jastorfska |
| Jastrowie | Jastrowie |
| Jastrzebie Zdroj | Jastrzębie-Zdrój |
| Jastrzębie-Zdrój | Jastrzębie-Zdrój |
| Jasło | Jasło |
| Jasło County | Powiat jasielski |
| Jat | Jat |
| JaTiMatic | Pistolet maszynowy Jati-Matic |
| Jats | Jat |
| Jaun | Jaun |
| jaundice | żółtaczka |
| jauntily | wesoło |
| Jaunutis | Jawnuta |
| Java | Jawa |
| Java Agent DEvelopment framework | Żad |
| Java applet | Aplet Javy |
| Java coffee | Jawa |
| Java compiler | Jikes |
| Java Database Connectivity | JDBC |
| Java Development Kit | Java Development Kit |
| Java Foundation Classes | JFC |
| Java Management Extensions | JMX |
| Java Media Framework | Java Media Framework |
| Java Message Service | Java Message Service |
| Java Modeling Language | Java Modeling Language |
| Java moss | Mech jawajski |
| Java Naming and Directory Interface | JNDI |
| Java Native Interface | Java Native Interface |
| Java package | Pakiet instalacyjny |
| Java Platform | Java Runtime Environment |
| Java Programming | Java |
| Java programming language | Java |
| Java remote method invocation | RMI |
| Java Runtime Environment | Java Runtime Environment |
| Java Sea | Morze Jawajskie |
| Java Secure Socket Extension | Java Secure Socket Extension |
| Java Servlet | Serwlet |
| Java Trench | Rów Jawajski |
| Java Virtual Machine | Wirtualna maszyna Javy |
| JavaBean | JavaBeans |
| Javac | Jikes |
| JavaCC | JavaCC |
| Javan | Język jawajski |
| Javan Rhinoceros | Nosorożec jawajski |
| Javanese | Język jawajski |
| Javanese language | Język jawajski |
| Javanese man | Język jawajski |
| Javanese people | Jawajczycy |
| JavaScript | JavaScript |
| JavaServer Faces | JavaServer Faces |
| JavaServer Pages | JavaServer Pages |
| javelin | oszczep |
| javelin throw | rzut oszczepem |
| javelin thrower | oszczepnik |
| Javerlhac-et-la-Chapelle-Saint-Robert | Javerlhac-et-la-Chapelle-Saint-Rober |
| Javi Martínez | Javier Martínez |
| Javier | Ksawery |
| Javier Aguirre | Javier Aguirre |
| Javier Balboa | Javier Balboa |
| Javier Bardem | Javier Bardem |
| Javier Cercas | Javier Cercas |
| Javier Chevantón | Ernesto Javier Chevantón |
| Javier Clemente | Javier Clemente |
| Javier Echevarría Rodríguez | Javier Echevarría Rodríguez |
| Javier Gonzales | Javier Gonzales |
| Javier Lozano Barragán | Javier Lozano Barragán |
| Javier Mascherano | Javier Mascherano |
| Javier Navarro | Javi Navarro |
| Javier Portillo | Javier Portillo |
| Javier Pérez de Cuéllar | Javier Pérez de Cuéllar |
| Javier Saviola | Javier Saviola |
| Javier Solana | Javier Solana |
| Javier Urruticoechea | Javier Urruticoechea |
| Javorníky | Jaworniki |
| jaw | szczęka |
| Jawa Motors | Jawa |
| Jawaharlal Nehru | Jawaharlal Nehru |
| jawbreaker | łamaniec |
| Jawhar Mnari | Jawhar Mnari |
| Jawi | Język indonezyjski |
| Jawi script | Język indonezyjski |
| Jawor County | Powiat jaworski |
| jaworznian | jaworznicki |
| Jaworzno | Jaworzno |
| Jaworzno Power Station | Elektrownia Jaworzno |
| Jaworzyna Śląska | Jaworzyna Śląska |
| jay | sójka |
| Jay Hernandez | Jay Hernández |
| Jay Leno | Jay Leno |
| Jay Miner | Jay Miner |
| Jay Rockefeller | Jay Rockefeller |
| Jay Treaty | Traktat Jaya |
| Jay Wright Forrester | Jay Forrester |
| Jay-Jay Okocha | Augustine Okocha |
| Jay-Z | Jay-Z |
| Jaya Bachchan | Jaya Bhaduri |
| Jayapura | Jayapura |
| Jayhawk State | Kansas |
| Jayne Torvill | Jayne Torvill |
