| Y boson | Bozon X |
| Y chromosome | Chromosom Y |
| y'all | państwo |
| Y-ray astronomy | Astronomia promieniowania gamma |
| Y-wing | Y-wing |
| Y-Δ transform | Transfiguracja |
| Ya Soshla S Uma | Ja soszła s uma |
| Yaakov Ben-Yezri | Yaakov Ben Yezri |
| Yaakov Edri | Yaakov Edri |
| Yabloko | Jabłoko |
| Yablonitsky Pass | Przełęcz Jabłonicka |
| Yablonoi Mountains | Góry Jabłonowe |
| Yablonovy Mountains | Góry Jabłonowe |
| Yacare Caiman | Kajman żakare |
| Yacatecuhtli | Tacatecutli |
| Yacc | Yacc |
| Yachad | Meretz |
| yacht | jacht |
| yachtsman | żeglarz |
| Yad Vashem | Yad Vashem |
| Yael | Jael |
| Yaesu | Yaesu |
| Yaffil | Zielony dzięcioł |
| Yafran | Jafran wa-Dżadu |
| Yager | Szaserzy |
| Yagha | Prowincja Yagha |
| Yagi antenna | Antena Yagi |
| Yahotyn | Jagodzin |
| Yahtzee | Poker |
| Yahuar Huacac | Yahuar Huacac |
| Yahweh | Jahwe |
| Yahya Jammeh | Yahya Jammeh |
| Yahya Muhammad Hamid ed-Din | Jahja Muhammad Hamid ud-Din |
| Yaiba | Yaiba - legendarny samuraj |
| Yajna | Jadźńa |
| Yajurveda | Jadźurweda |
| yak | jak |
| Yakama | Yakima |
| Yakitori | Yakitori |
| Yakov Agranov | Jakow Agranow |
| Yakov Davydov | Jakow Dawtian |
| Yakov Dzhugashvili | Jakow Dżugaszwili |
| Yakov Frenkel | Jakow Frenkel |
| Yakov Protazanov | Jakow Protazanow |
| Yakov Sverdlov | Jakow Swierdłow |
| Yakov Zak | Jakow Zak |
| Yakovlev | Jakowlew |
| Yakuake | Yakuake |
| Yakub Kolas | Jakub Kołas |
| Yakubu Aiyegbeni | Yakubu Aiyegbeni |
| Yakut | jakucki |
| Yakut Autonomous Soviet Socialist Republic | Jakucka Autonomiczna Socjalistyczna Republika Radziecka |
| Yakutia | Jakucja |
| Yakuts | Jakuci |
| Yakutsk | Jakuck |
| Yakuza | Yakuza |
| Yala Province | Prowincja Yala |
| Yale University | Uniwersytet Yale'a |
| Yalpug Lake | Jezioro Jałpuh |
| Yalta | Jałta |
| Yalta Conference | Konferencja jałtańska |
| yam | pochrzyn |
| Yamaceratops | Jamaceratops |
| Yamagata | Prefektura Yamagata |
| Yamagata Prefecture | Prefektura Yamagata |
| Yamaguchi | Yamaguchi |
| Yamaguchi Prefecture | Prefektura Yamaguchi |
| Yamaha Corporation | Yamaha |
| Yamakasi | Yamakasi - współcześni samurajowie |
| Yamal | Jamał |
| Yamalo-Nenets Autonomous Okrug | Jamalsko-Nieniecki Okręg Autonomiczny |
| Yamanaka Ino | Ino Yamanaka |
| Yamanashi | Prefektura Yamanashi |
| Yamanashi Prefecture | Prefektura Yamanashi |
| Yamas | Yama |
| Yamasaki Minoru | Minoru Yamasaki |
| Yamato | Yamato |
| Yamato class battleship | Yamato |
| Yamato period | Yamato |
| Yamato Province | Pancerniki typu Yamato |
| Yambol | Jamboł |
| Yambol Province | Obwód Jamboł |
| Yamoussoukro | Jamusukro |
| Yampil | Jampil |
| Yamucha | Yamcha |
| Yamuna | Jamuna |
| Yan | Państwo Yan |
| Yan Zi | Yan Zi |
| Yana people | Yana |
| Yana River | Jana |
| Yanartaş | Chimera |
| Yanaul | Janauł |
| Yandex | Yandex |
| Yang di-Pertuan Agong | Yang di-Pertuan Agong |
| Yang Liwei | Yang Liwei |
| Yang sevenoo | Hotline |
| Yangchuanosaurus | Jangczuanozaur |
| Yangon | Rangun |
| Yangon Division | Rangun |
| Yangsan | Yangsan |
| Yangshao culture | Kultura Yangshao |
| Yangtze | Jangcy |
| Yangtze River | Jangcy |
| Yanick Dupre Memorial Award | Yanick Dupre Memorial Award |
| Yank-off | Wyrywaă |
| Yanka Dyagileva | Janka Diagilewa |
| Yanka Kupala | Janka Kupała |
| Yankee Doodle | Amerykański hymn narodowy |
| Yann Tiersen | Yann Tiersen |
| Yanni | Yanni |
| Yannick Noah | Yannick Noah |
| Yannis Goumas | Yannis Goumas |
| Yanomami | Janomamowie |
| Yantarny | Jantarnyj |
| Yantra | Jantra |
| Yantra River | Jantra |
| Yao | Yao |
| Yao Ming | Yao Ming |
| Yao people | Yao |
| Yaoundé | Jaunde |
| Yaoundé Convention | Konwencja z Jaunde |
| Yap | Yap |
| Yap Trench | Rów Yap |
| Yapen | Yapen |
| Yaqob of Ethiopia | Jakub |
| Yaqub al-Mansur | Jakub al-Mansur |
| Yaqui | Yaqui |
| Yaqui River | Yaqui |
| Yara International | Yara International |
| Yaracuy | Yaracuy |
| Yarborough | Plaża |
| yard | trawnik |
