| Yevpatoria | Yevtushenko, Yevgeny Aleksandrovich | Yeysk |
| Yezobotys | Yezobotys dissimilis | Yezoceryx angustus |
| Yezoceryx apicipennis | Yezoceryx biumbratus | Yezoceryx choui |
| Yezoceryx continuus | Yezoceryx ferrugineus | Yezoceryx flavidus |
| Yezoceryx fulvus | Yezoceryx intermedius | Yezoceryx isshikii |
| Yezoceryx luteus | Yezoceryx maculatus | Yezoceryx montanus |
| Yezoceryx monticola | Yezoceryx nebulosus | Yezoceryx nigricans |
| Yezoceryx nigrolineatus | Yezoceryx punctatus | Yezoceryx purpuratus |
| Yezoceryx rishiriensis | Yezoceryx scutellaris | Yezoceryx sonani |
| Yezoceryx testaceus | Yezoceryx townesi | Yezoceryx varicolor |
| Yezoceryx walkleyae | Yezoceryx xanthorius | Yezognophos |
| Yezosaurus | YF-12 | YF-17 |
| YF-17 Cobra | YF-23 | YF-23 Black Widow |
| YF-23 Black Widow II | YF-95 | Yffiniac |
| YFM-1 | YFM-1 Airacuda | YG Entertainment |
| YG Family | Yggdrasil | Ygos-Saint-Saturnin |
| Ygrande | Yi | Yi (khủng long) |
| Yi Bangja | Yi Hwang | Yi I |
| Yi Je-hyeon | Yi Pom-sok | Yi qi |
| Yi Ruma | Yi Seong-gye | Yi So-yeon |
| Yi Sun-sin | Yi Sung-man | Yi Un |
| Yi-ngo (huyện) | Yiğenler, Demirci | Yiğerler, Beypazarı |
| Yiğit İncedemir | Yiğit, İnegöl | Yiğitalan, Bafra |
| Yiğitali, Osmangazi | Yiğitaliler, Bayramiç | Yiğitözü, Araklı |
| Yiğitbaşı, Demirköy | Yiğitbaşı, Genç | Yiğitbaşı, Pazaryolu |
| Yiğitcan Erdoğan | Yiğithan Güveli | Yiğitharman, Solhan |
| Yiğitkonağı, Göle | Yiğitler Bucak Merkezi, Bayramiç | Yiğitler, Ünye |
| Yiğitler, Çermik | Yiğitler, Demirci | Yiğitler, Karlıova |
| Yiğitler, Kemalpaşa | Yiğitler, Nazımiye | Yiğitler, Pazarcık |
| Yiğitler, Sason | Yiğitler, Tekman | Yiğitler, Yıldızeli |
| Yiğitler, Yenifakılı | Yiğitli, Çubuk | Yiğitpınarı, İhsaniye |
| Yiğitpınarı, Pasinler | Yiğittaşı, Pasinler | Yiğityatağı, Doğubayazıt |
| Yiğityolu, Bağlar | Yiğityolu, Karayazı | Yibinosaurus |
| Yidalpta | Yidalpta auragalis | Yidalpta flavagalis |
| Yidalpta selenalis | Yidalpta thetys | Yiddish |
| Yield | Yigoga | Yigoga acutijuxta |
| Yigoga aequicuspis | Yigoga alexandrae | Yigoga amasicola |
| Yigoga amasina | Yigoga atlantis | Yigoga atlas |
| Yigoga bornicensis | Yigoga brunneopicta | Yigoga caroli |
| Yigoga celsicola | Yigoga denticulosa | Yigoga dilucida |
| Yigoga disturbans | Yigoga etoliae | Yigoga eureteocles |
| Yigoga exacta | Yigoga facunda | Yigoga farsistana |
| Yigoga fidelis | Yigoga flavina | Yigoga forcipula |
| Yigoga glaucescens | Yigoga goateri | Yigoga gracilis |
| Yigoga gueddelanea | Yigoga helladica | Yigoga hyrcana |
| Yigoga imitata | Yigoga improba | Yigoga improcera |
| Yigoga iranica | Yigoga iranicola | Yigoga issykula |
| Yigoga jura | Yigoga kaaba | Yigoga karsholti |
| Yigoga khorassana | Yigoga latipennis | Yigoga leonina |
| Yigoga libanicola | Yigoga lithargyrula | Yigoga lupinus |
| Yigoga lutescens | Yigoga mirabica | Yigoga mixta |
| Yigoga multicuspis | Yigoga nachadira | Yigoga nigrescens |
| Yigoga obscurior | Yigoga ochrina | Yigoga orientis |
| Yigoga perturbans | Yigoga picturata | Yigoga pretiosa |
| Yigoga pretiosissima | Yigoga pseudorientis | Yigoga pseudosignifera |
| Yigoga pygmaea | Yigoga robustior | Yigoga romanoi |
| Yigoga romanovi | Yigoga rubra | Yigoga samnitica |
| Yigoga serraticornis | Yigoga signifera | Yigoga sincera |
| Yigoga spinifera | Yigoga spinosa | Yigoga spissa |
| Yigoga spissilinea | Yigoga stigmatula | Yigoga strenua |
| Yigoga subturbans | Yigoga sureyae | Yigoga taftanica |
| Yigoga tauricola | Yigoga toxistigma | Yigoga truculenta |
| Yigoga turbans | Yigoga turcicola | Yigoga unifica |
| Yigoga wiltshirei | Yigoga xanthosemata | Yiinthi |
| Yiinthi anzsesorum | Yiinthi chillagoe | Yiinthi gallonae |
| Yiinthi kakadu | Yiinthi lycodes | Yiinthi molloyensis |
| Yiinthi spathula | Yiinthi torresiana | Yilgarnia |
| Yilgarnia currycomboides | Yilgarnia linnaei | Yim Da-young |
| Yim Si-wan | Yimenosaurus | Yimnashana ceylonica |
| Yimnashana denticulata | Yimnashana lungtauensis | Yimnashana theae |
| Yimnashaniana jianfenglingensis | Yinchie | Yinchie zaohui |
| Ying ji-1 | Yingaresca | Yingaresca absimilis |
| Yingaresca amabilis | Yingaresca amazonica | Yingaresca batesi |
| Yingaresca bohiensis | Yingaresca bowditchi | Yingaresca brevicollis |
| Yingaresca brevivittata | Yingaresca chrysura | Yingaresca colasi |
| Yingaresca conifera | Yingaresca constanzae | Yingaresca cyclopea |
| Yingaresca devota | Yingaresca difficilis | Yingaresca echinoderma |
| Yingaresca freyi | Yingaresca fulvonigra | Yingaresca fuscomaculata |
| Yingaresca hexarhabdota | Yingaresca holosericea | Yingaresca inaequalis |
| Yingaresca jamaicensis | Yingaresca labida | Yingaresca laticollis |
| Yingaresca maculipennis | Yingaresca maculipes | Yingaresca melanocephala |
| Yingaresca nerea | Yingaresca obliterata | Yingaresca obsurofasciata |
| Yingaresca ornata | Yingaresca orthodera | Yingaresca oteroi |
| Yingaresca pauperata | Yingaresca pereirai | Yingaresca poeciloptera |
| Yingaresca scurrilis | Yingaresca spiloptera | Yingaresca terminalis |
| Yingaresca varicornis | Yingaresca venustula | Yingaresca volatilis |
| Yingaresca wolcotti | Yingaresca zezia | Yinghuo-1 |
| Yinglak Chinnawat | Yingluck Shinawatra | Yingshanosaurus |
| Yinlong | Yinshania | Yinshania acutangula |
| Yinshania furcatopilosa | Yinshania henryi | Yinshania paradoxa |
| Yinshania rivulorum | Yinshania sinuata | Yinshania zayuensis |
| YinYueTai | Yirce, Sungurlu | Yiricek, Göksun |
| Yirmibeşoğlu, Yenice | Yiruma | Yitirmez, Gümüşhane |
| Yitzchak Abadi | Yitzhak Ben-Zvi | Yitzhak Navon |
| Yitzhak Rabin | Yitzhak Shamir | Yivdincik, Keşap |
| Yixianosaurus | Yizhousaurus | YKK |
| Yksdarhus lyneborgi | Ylang công chúa | Ylang-ylang |
| Yläne | Yle | YLE |
| Yleyrodes isoberlinae | Yli-Ii | Ylihärmä |
| Ylikiiminki | Ylistaro | Ylitornio |
