Elasmia mandela is a species of moth of the family Notodontidae first described by Herbert Druce in 1887.

Overall colour is dark grey brown with obscure transverse forewing markings.

Elasmia mandela santaana is grey overall with a contrasting dark scale patch in the reniform/subreniform area.

The larvae have been recorded feeding on Rhamnaceae and Sapindaceae species, including Unganadia speciosa for subspecies Elasmia mandela santaana.

The name of subspecies Elasmia mandela santaana refers to its type locality, the Santa Ana National Wildlife Refuge in Texas.