| Ivesia tridentata | Ivesti | Ivettea minuscula |
| Ivian Sarcos | Ivica Barbarić | Ivica Olić |
| Ivica Osim | Ivica Račan | Ivica Vastić |
| Iviella | Iviella ohioensis | Iviella reclusa |
| Ivielum | Ivielum sibiricum | Ivieolus brooksi |
| Ivieolus inflaticollis | Ivieolus pseudoscutellatus | Iviers |
| Ivieus costatus | Iville | Ivinhema |
| Iviraiva | Iviraiva argentina | Iviraiva pachyura |
| Ivisan | Ivisan, Capiz | IVL C.24 |
| IVL C.VI.25 | IVL E.30 Kotka | IVL Haukka |
| IVNS1ABP | Ivnyansky (huyện) | Ivo Andrić |
| Ivo Andric | Ivo Iličević | Ivo Josipović |
| Ivo Samkalden | Ivo Sanader | Ivo Ulich |
| Ivodea lanceolata | Ivolândia | Ivolginsky (huyện) |
| Ivor Guest, 4th Viscount Wimborne | Ivor Novello Awards | Ivor Weitzer |
| Ivorá | Ivorra | Ivors |
| Ivory | Ivory Coast | Ivory, Jura |
| Ivoti | Ivoy-le-Pré | Ivrea |
| Ivrey | Ivry-en-Montagne | Ivry-la-Bataille |
| Ivry-le-Temple | Ivry-sur-Seine | Ivshinagnostus |
| Ivy League | Ivy Mike | Ivy, Quận Lyon, Kansas |
| Ivyland, Pennsylvania | Ivysaur | Iwaaki Hitoshi |
| Iwaaki Hitosi | Iwabuchi Isao | Iwade, Wakayama |
| Iwaki | Iwaki, Fukushima | Iwakuni |
| Iwakuni, Yamaguchi | Iwakura | Iwakura Tomomi |
| Iwama Dōjō | Iwama dojo | Iwama, Ibaraki |
| Iwamasa Daiki | Iwame trout | Iwamizawa, Hokkaidō |
| Iwamizawa, Hokkaido | Iwamoto Sho | Iwamoto Teruo |
| Iwan Rheon | Iwanami Takuya | Iwane Matsui |
| Iwanuma Shunsuke | Iwanuma, Miyagi | Iwao Takamoto |
| Iwaoa | Iwaoa reticulata | Iwasaki Chihiro |
| Iwashiro Tarō | Iwata | Iwata, Shizuoka |
| Iwatani Toshio | Iwate | Iwate (tỉnh) |
| Iwatsukia | Iwatsukia jishibae | Iwatsukia spinosa |
| Iwatsukiella | Iwatsukiella leucotricha | Iwo Jima |
| Iwogumoa | Iwogumoa acco | Iwogumoa dicranata |
| Iwogumoa ensifer | Iwogumoa illustrata | Iwogumoa insidiosa |
| Iwogumoa interuna | Iwogumoa longa | Iwogumoa montivaga |
| Iwogumoa nagasakiensis | Iwogumoa pengi | Iwogumoa porta |
| Iwogumoa songminjae | Iwogumoa taoyuandong | Iwogumoa tengchihensis |
| Iwogumoa xieae | Iwogumoa xinhuiensis | Iwogumoa yaeyamensis |
| Iwogumoa yushanensis | Iwonicz-Zdrój | IWork |
| IWS 2000 | Iwuy | Ixala |
| Ixala adventaria | Ixala desperaria | Ixala klotsi |
| Ixala proutearia | Ixala unicoloraria | Ixalodectes |
| Ixalodectes flectocercus | Ixalotriton niger | Ixalotriton parva |
| Ixamatus | Ixamatus barina | Ixamatus broomi |
| Ixamatus caldera | Ixamatus candidus | Ixamatus fischeri |
| Ixamatus lornensis | Ixamatus musgravei | Ixamatus rozefeldsi |
| Ixamatus varius | Ixamatus webbae | Ixanthus |
| Ixanthus viscosus | Ixaren | Ixcamilpa de Guerrero |
| Ixcaquixtla | Ixcateopan de Cuauhtémoc | Ixcatepec |
| Ixchela | Ixchela abernathyi | Ixchela furcula |
| Ixchela pecki | Ixchela placida | Ixchela simoni |
| Ixerba | Ixerba brexioides | Ixerbaceae |
| Ixeridium | Ixeridium aculeolatum | Ixeridium biparum |
| Ixeridium elegans | Ixeridium gracile | Ixeridium gramineum |
| Ixeridium graminifolium | Ixeridium laevigatum | Ixeridium makinoanum |
| Ixeridium sagittarioides | Ixeridium sandsii | Ixeridium sonchifolium |
| Ixeridium strigosum | Ixeridium subacaule | Ixeridium transnokoense |
| Ixeridium yunnanense | Ixeris | Ixeris alpicola |
| Ixeris chinensis | Ixeris debilis | Ixeris dentata |
| Ixeris denticulata | Ixeris dissecta | Ixeris gracilis |
| Ixeris graminifolia | Ixeris integra | Ixeris japonica |
| Ixeris longirostra | Ixeris longirostrata | Ixeris makinoana |
| Ixeris musashensis | Ixeris nikoensis | Ixeris parva |
| Ixeris polycephala | Ixeris repens | Ixeris retrorsidens |
| Ixeris sekimotoi | Ixeris stolonifera | Ixeris strigosa |
| Ixeris tamagawaensis | Ixeris versicolor | Ixeris yakuinsularis |
| Ixhuacán de los Reyes | Ixhuatán | Ixhuatlancillo |
| Ixhuatlán de Madero | Ixhuatlán del Café | Ixhuatlán del Sureste |
| Ixia acaulis | Ixia amethystina | Ixia atrandra |
| Ixia aurea | Ixia brevituba | Ixia brunneobractea |
| Ixia campanulata | Ixia capillaris | Ixia cochlearis |
| Ixia collina | Ixia contorta | Ixia curta |
| Ixia curvata | Ixia divaricata | Ixia dubia |
| Ixia erubescens | Ixia esterhuyseniae | Ixia flexuosa |
| Ixia fucata | Ixia gloriosa | Ixia lacerata |
| Ixia latifolia | Ixia leipoldtii | Ixia longituba |
| Ixia lutea | Ixia maculata | Ixia marginifolia |
| Ixia metelerkampiae | Ixia micrandra | Ixia monadelpha |
| Ixia mostertii | Ixia namaquana | Ixia odorata |
| Ixia orientalis | Ixia oxalidiflora | Ixia paniculata |
| Ixia patens | Ixia pauciflora | Ixia paucifolia |
| Ixia polystachya | Ixia pumilio | Ixia purpureorosea |
| Ixia rapunculoides | Ixia rivulicola | Ixia robusta |
| Ixia rouxii | Ixia scillaris | Ixia sobolifera |
| Ixia splendida | Ixia stohriae | Ixia stolonifera |
| Ixia stricta | Ixia superba | Ixia tenuifolia |
| Ixia thomasiae | Ixia trifolia | Ixia trinervata |
| Ixia vanzijliae | Ixia versicolor | Ixia vinacea |
| Ixia viridiflora | Ixias | Ixidium tuberculatum |
| Ixil | Ixiochlamys | Ixiochlamys cuneifolia |
| Ixiochlamys filicifolia | Ixiochlamys integerrima | Ixiochlamys nana |
| Ixiolaena | Ixiolaena viscosa | Ixioliriaceae |
| Ixiolirion | Ixiolirion ferganicum | Ixiolirion karateginum |
| Ixiolirion songaricum | Ixiolirion tataricum | Ixiolirion tataricum ixiolirioides |
| Ixiolirion tataricum tataricum | Ixiolirion tataricum var. ixiolirioides | Ixiolirion tataricum var. tataricum |
| Ixmatlahuacan | Ixmiquilpan | Ixobrychus |
| Ixobrychus cinnamomeus | Ixobrychus dubius | Ixobrychus eurhythmus |
