| Allenstown, New Hampshire | Allentown, PA | Allentown, Pennsylvania |
| Allentsteig | Allenville, Illinois | Allenwiller |
| Allepuz | Aller, Asturias | Allerastria |
| Allerey | Allerey-sur-Saône | Allerheiligen bei Wildon |
| Allerheiligen im Mühlkreis | Allerheiligen im Mürztal | Allerheiligen-Hofkirche |
| Alleringersleben | Allerona | Allersberg |
| Allershausen | Allerton, Illinois | Allerton, Iowa |
| Allery | Alles-sur-Dordogne | Alleshausen |
| Alleuscelus deletangi | Alleuscelus violaceipennis | Alleuze |
| Allevard | Allex | Allexis batangae |
| Allexis cauliflora | Allexis obanensis | Allexis zygomorpha |
| Alleyrac | Alleyras | Alleyrat, Corrèze |
| Alleyrat, Creuse | Allez-et-Cazeneuve | Allgood, Alabama |
| Allhalli, Sedam | Allhaming | Allhartsberg |
| Alliaceae | Alliance, Ohio | Alliancelles |
| Allianz | Allianz Arena | Alliaria |
| Alliaria auriculata | Alliaria brachycarpa | Alliaria petiolata |
| Alliat | Allières | Allibaudières |
| Allichamps | Allidiostoma | Allidiostomatinae |
| Allie X | Allied Aviation LRA | Allied Aviation XLRA |
| Allied General | Allier | Allier, Hautes-Pyrénées |
| Alligator | Alligator mississippiensis | Alligator sinensis |
| Alligator Sky | Alligator, Mississippi | Alligatoridae |
| Alligatorinae | Alligny-Cosne | Alligny-en-Morvan |
| Allikallu, Bangarapet | Allikunte-Kadirenahalli, Bangarapet | Allin, Quận McLean, Illinois |
| Allineuc | Alling | Allinges |
| Allioideae | Allioniella | Allioniella cryphaeoides |
| Allioniellopsis | Allioniellopsis cryphaeoides | Alliott Verdon Roe |
| Allipura, Gauribidanur | Allipura, Savanur | Allison Harvard |
| Allison Iraheta | Allison Janney | Allison Shearmur |
| Allison, Iowa | Allison, Quận Clinton, Pennsylvania | Allison, Quận Decatur, Kansas |
| Allison, Quận Lawrence, Illinois | Allison, Quận Lyon, Iowa | Allison, Quận Osceola, Iowa |
| Allisonia | Allisonia cockaynei | Allisonia moerckioides |
| Allisoniaceae | Allisoniella | Allisoniella nigra |
| Allisoniella subbipartita | Allitoria | Allittia |
| Allittia cardiocarpa | Allittia uliginosa | Allium |
| Allium aaseae | Allium abbasii | Allium abramsii |
| Allium acidoides | Allium aciphyllum | Allium acuminatum |
| Allium acutiflorum | Allium aegilicum | Allium aeginiense |
| Allium affine | Allium afghanicum | Allium aflatunense |
| Allium agrigentinum | Allium akaka | Allium alabasicum |
| Allium alaicum | Allium albescens | Allium albiflorum |
| Allium albotunicatum | Allium albovianum | Allium alexandrae |
| Allium alexeianum | Allium alibile | Allium alpinarii |
| Allium altaicum | Allium altissimum | Allium altoatlanticum |
| Allium altyncolicum | Allium amethystinum | Allium ampeloprasum |
| Allium amphibolum | Allium amplectens | Allium anacoleum |
| Allium anatolicum | Allium anceps | Allium angulosum |
| Allium anisopodium | Allium anisopodium anisopodium | Allium anisopodium var. anisopodium |
| Allium anisopodium var. zimmermannianum | Allium anisopodium zimmermannianum | Allium anisotepalum |
| Allium antalyense | Allium antonii-bolosii | Allium anzalonei |
| Allium apolloniensis | Allium apulum | Allium archeotrichon |
| Allium arkitense | Allium arlgirdense | Allium armenum |
| Allium armerioides | Allium aroides | Allium artemisietorum |
| Allium asarense | Allium ascalonicum | Allium ascendens |
| Allium aschersonianum | Allium asclepiadeum | Allium asirense |
| Allium asperiflorum | Allium assadii | Allium atropurpureum |
| Allium atrorubens | Allium atrorubens cristatum | Allium atrorubens var. cristatum |
| Allium atrosanguineum | Allium atrosanguineum atrosanguineum | Allium atrosanguineum fedschenkoanum |
| Allium atrosanguineum tibeticum | Allium atrosanguineum var. atrosanguineum | Allium atrosanguineum var. fedschenkoanum |
| Allium atrosanguineum var. tibeticum | Allium atroviolaceum | Allium aucheri |
| Allium auriculatum | Allium austroiranicum | Allium austrokyushuense |
| Allium austrosibiricum | Allium autumnale | Allium autumniflorum |
| Allium azaurenum | Allium aznavense | Allium azutavicum |
| Allium babingtonii | Allium backhousianum | Allium baekdusanense |
| Allium baeticum | Allium bajtulinii | Allium bakhtiaricum |
| Allium balansae | Allium baluchistanicum | Allium barsczewskii |
| Allium barthianum | Allium bassitense | Allium baytopiorum |
| Allium beesianum | Allium bekeczalicum | Allium bellulum |
| Allium bidentatum | Allium bidentatum bidentatum | Allium bidentatum var. bidentatum |
| Allium bigelowii | Allium birkinshawii | Allium bisceptrum |
| Allium bisotunense | Allium blandum | Allium blomfieldianum |
| Allium boissieri | Allium bolanderi | Allium bolanderi bolanderi |
| Allium bolanderi mirabile | Allium bolanderi var. bolanderi | Allium bolanderi var. mirabile |
| Allium bornmuelleri | Allium borszczowii | Allium botschantzevii |
| Allium bourgeaui | Allium bourgeaui creticum | Allium bourgeaui cycladicum |
| Allium bourgeaui subsp. creticum | Allium bourgeaui subsp. cycladicum | Allium brachyodon |
| Allium brachyscapum | Allium brachyspathum | Allium bracteolatum |
| Allium brandegeei | Allium brevicaule | Allium brevidens |
| Allium brevidentatum | Allium brevidentiforme | Allium brevipes |
| Allium breviradium | Allium breviscapum | Allium brevistylum |
| Allium brulloi | Allium brussalisii | Allium bucharicum |
| Allium bungei | Allium burjaticum | Allium burlewii |
| Allium caeruleum | Allium caesioides | Allium caesium |
| Allium caespitosum | Allium calabrum | Allium calamarophilon |
| Allium callidyction | Allium callimischon | Allium callimischon haemostictum |
| Allium callimischon subsp. haemostictum | Allium calocephalum | Allium calyptratum |
| Allium campanulatum | Allium canadense | Allium canadense canadense |
| Allium canadense ecristatum | Allium canadense hyacinthoides | Allium canadense lavandulare |
| Allium canadense mobilense | Allium canadense var. canadense | Allium canadense var. ecristatum |
| Allium canadense var. hyacinthoides | Allium canadense var. lavandulare | Allium canadense var. mobilense |
| Allium candargyi | Allium candolleanum | Allium capitellatum |
| Allium cappadocicum | Allium caput-medusae | Allium cardiostemon |
| Allium carinatum | Allium carinatum carinatum | Allium carinatum pulchellum |
| Allium carinatum subsp. carinatum | Allium carinatum subsp. pulchellum | Allium carmeli |
| Allium caroli-henrici | Allium carolinianum | Allium caspium |
| Allium caspium baissunense | Allium caspium caspium | Allium caspium subsp. baissunense |
| Allium caspium subsp. caspium | Allium cassium | Allium castellanense |
| Allium cathodicarpum | Allium cepa | Allium cepiforme |
| Allium cernuum | Allium chalcophengos | Allium chalkii |
