C. milleri

C. milleri may refer to:
 * Calliphora milleri, a synonym for Calliphora hilli, a blow fly species
 * Candida milleri, a yeast species now known as Candida humilis
 * Cochliopina milleri, the Miller's snail, a freshwater snail species endemic to Mexico
 * Coleotechnites milleri, the lodgepole needleminer, a moth species found in the United States and Canada