E. laeta may refer to:

Elaphe laeta, a rat snake Elimia laeta, an extinct snail Embelia laeta, a climbing shrub Erora laeta, a gossamer-winged butterfly Euphydryas laeta, a brush-footed butterfly Eurema laeta, an Indian butterfly Euryopis laeta, a tangle-web spider Euthrix laeta, a snout moth