E. affinis may refer to: Emberiza affinis, the brown-rumped bunting, a bird species found in Africa Eleutherodactylus affinis, a frog species endemic to Colombia Elops affinis, the Pacific tenpounder or Pacific ladyfish, a fish species Empidonax affinis, the pine flycatcher, a bird species found in Mexico and Guatemala Eremobates affinis, an arachnid species Euphonia affinis, the scrub euphonia, a bird species found in Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico and Nicaragua Euthynnus affinis, the kawakawa or false albacore, a fish species