C. clavata

C. clavata may refer to:
 * Coilostylis clavata, an orchid species
 * Cellypha clavata, a fungus species in the genus Cellypha
 * Commelina clavata, a flowering plant species in the genus Commelina
 * Clavus clavata, a sea snail species
 * Curvularia clavata, a mold species in the genus Curvularia
 * Cunninghamella clavata, a soil fungus species