| Crocus cartwrightianus | Crocus caspius | Crocus chrysanthus |
| Crocus corsicus | Crocus cvijicii | Crocus cyprius |
| Crocus dalmaticus | Crocus danfordiae | Crocus etruscus |
| Crocus flavus | Crocus fleischeri | Crocus gargaricus |
| Crocus gilanicus | Crocus goulimyi | Crocus graveolens |
| Crocus hadriaticus | Crocus hartmannianus | Crocus herbertii |
| Crocus hermoneus | Crocus hybridus | Crocus hyemalis |
| Crocus imperati | Crocus karduchorum | Crocus kerndorffiorum |
| Crocus korolkowii | Crocus kosaninii | Crocus kotschyanus |
| Crocus laevigatus | Crocus leichtlinii | Crocus ligusticus |
| Crocus longiflorus | Crocus malyi | Crocus mathewii |
| Crocus michelsonii | Crocus minimus | Crocus moabiticus |
| Crocus naqabensis | Crocus nerimaniae | Crocus nevadensis |
| Crocus niveus | Crocus nudiflorus | Crocus ochroleucus |
| Crocus olivieri | Crocus oreocreticus | Crocus pallasii |
| Crocus paschei | Crocus paulineae | Crocus pelistericus |
| Crocus pestalozzae | Crocus pulchellus | Crocus reticulatus |
| Crocus robertianus | Crocus rujanensis | Crocus sativus |
| Crocus scardicus | Crocus scharojanii | Crocus serotinus |
| Crocus sieberi | Crocus sieheanus | Crocus speciosus |
| Crocus suaveolens | Crocus suwarowianus | Crocus thomasii |
| Crocus tommasinianus | Crocus tournefortii | Crocus vallicola |
| Crocus veluchensis | Crocus veneris | Crocus vernus |
| Crocus versicolor | Crocus vitellinus | Crocus wattiorum |
| Crocus, Quận Towner, Bắc Dakota | Crocuta | Crocuta crocuta |
| Crocy | Crocydoscelus | Crocyllis |
| Crocypus | Crocypus macroleuca | Crocypus perlucidaria |
| Crodo | Croesoactia cincta | Croesus |
| Crofte, Quận Burleigh, Bắc Dakota | Crognaleto | Croignon |
| Croilia | Croilia mossambica | Croisances |
| Croisette, Pas-de-Calais | Croisilles, Calvados | Croisilles, Eure-et-Loir |
| Croisilles, Orne | Croisilles, Pas-de-Calais | Croismare |
| Croissanville | Croissy-Beaubourg | Croissy-sur-Celle |
| Croissy-sur-Seine | Croisy | Croisy-sur-Andelle |
| Croisy-sur-Eure | Croitana | Croitana aestiva |
| Croitana arenaria | Croitana croites | Croix (Territorio di Belfort) |
| Croix, Nord | Croix, Territoire de Belfort | Croix, Territorio di Belfort |
| Croix-Caluyau | Croix-Chapeau | Croix-en-Ternois |
| Croix-Fonsomme | Croix-Fonsommes | Croix-Mare |
| Croix-Moligneaux | Croixanvec | Croixdalle |
| Croixrault | Croizatia brevipetiolata | Croizatia cimalonia |
| Croizatia naiguatensis | Croizatia neotropica | Croizatia panamensis |
| Croizet-sur-Gand | Crolles | Crollon |
| Crom | Crom alum | Crom cacbua |
| Crom nitrat | Crom nitrua | Crom(II) florua |
| Crom(III) clorua | Crom(III) iotua | Crom(III) sunfat |
| Crom(IV) oxit | Cromac, Haute-Vienne | Cromapanax lobatus |
| Cromary | Cromínia | Crombrugghia |
| Crombrugghia distans | Crombrugghia laetus | Crombrugghia reichli |
| Crombrugghia wahlbergi | Cromen | Cromer Town F.C. |
| Cromidon austerum | Cromidon confusum | Cromidon corrigioloides |
| Cromidon decumbens | Cromidon dregei | Cromidon gracile |
| Cromidon hamulosum | Cromidon microechinos | Cromidon minutum |
| Cromidon plantaginis | Cromidon pusillum | Cromidon varicalyx |
| Cromileptes | Cromileptes altivelis | Cromit |
| Cromobergia | Cromstrijen | Cromwell, Iowa |
| Cromwell, Minnesota | Cromwell, Quận Burleigh, Bắc Dakota | Cromwell, Quận Huntingdon, Pennsylvania |
| Cronartium | Cronat | Cronce |
| Cronenberg, Kusel | Cronia | Cronia amygdala |
| Cronia aurantiaca | Cronia avellana | Cronia avenacea |
| Cronia tosana | Croniades | Croninia kingiana |
| Cronisia | Cronisia fimbriata | Cronisia mexicana |
| Cronisia weddellii | Cronopio dentiacutus | Cronos |
| Cronos (thần thoại) | Cronquist | Cronquistianthus |
| Cronquistianthus bishopii | Cronquistianthus bullifer | Cronquistianthus bulliferus |
| Cronquistianthus callacatensis | Cronquistianthus celendensis | Cronquistianthus celendinensis |
| Cronquistianthus chachapoyensis | Cronquistianthus chamaedrifolius | Cronquistianthus desmophyllus |
| Cronquistianthus determinatus | Cronquistianthus ferreyrii | Cronquistianthus glomeratus |
| Cronquistianthus lavandulifolius | Cronquistianthus leucophyllus | Cronquistianthus lopez-mirandae |
| Cronquistianthus loxensis | Cronquistianthus macbridei | Cronquistianthus marrubiifolius |
| Cronquistianthus niveus | Cronquistianthus origanoides | Cronquistianthus pseudoriganoides |
| Cronquistianthus rosei | Cronquistianthus trianae | Cronquistianthus urubambensis |
| Cronquistianthus volkensii | Cronus | Cronus (thần thoại) |
| Crood | Crook, Quận Hamilton, Illinois | Crooked Creek, Quận Bollinger, Missouri |
| Crooked Creek, Quận Cumberland, Illinois | Crooked Creek, Quận Jasper, Illinois | Crooked Creek, Quận Meade, Kansas |
| Crooked River, Quận Ray, Missouri | Crookston, Minnesota | Crooksville, Ohio |
| Croomia heterosepala | Croomia japonica | Croomia pauciflora |
| Crop circle | Cropani | Cropia |
| Cropia albiclava | Cropia aleuca | Cropia bowreyi |
| Cropia carnitincta | Cropia cedica | Cropia connecta |
| Cropia consonens | Cropia europs | Cropia fuscoviridis |
| Cropia hadenoides | Cropia impressionata | Cropia indigna |
| Cropia infusa | Cropia isidora | Cropia jamaicensis |
| Cropia juba | Cropia leucodonta | Cropia maudaea |
| Cropia minthe | Cropia perfusa | Cropia phila |
| Cropia philosopha | Cropia plumbicincta | Cropia poliomera |
| Cropia rivulosa | Cropia ruthaea | Cropia sigrida |
| Cropia striata | Cropia subapicalis | Cropia submarginalis |
| Cropia templada | Cropia tessellata | Cropia viridimicans |
| Cropsey, Quận McLean, Illinois | Croptilon | Croptilon divaricatum |
| Croptilon hookerianum | Croptilon rigidifolium | Cropus |
| Cros, Gard | Cros, Puy-de-Dôme | Cros-de-Géorand |
| Cros-de-Montvert | Cros-de-Ronesque | Crosa |
| Crosby, Minnesota | Crosby, Mississippi | Crosby, Quận Hamilton, Ohio |
| Crosby, Texas | Crosbya | Crosbya nervosa |
| Crosbya straminea | Crosbyarachne | Crosbyarachne bukovskyi |
| Crosbylonia | Crosbylonia borealis | Crosbysaurus |
| Crosbyton, Texas | Croscherichia | Croscherichia albilaena |
| Croscherichia bedeli | Croscherichia delarouzei | Croscherichia femorata |
| Croscherichia fulgurita | Croscherichia gilvipes | Croscherichia goryi |
