Letis is a genus of moths in the family Erebidae. The genus was erected by Jacob Hübner in 1821.

Selected species Letis hercyna (Drury, 1773) Letis magna Gmelin, 1789"Erebidae: Thermesiinae: Letis magna". Quaoar Power Zoo. Letis orcynia Druce, 1890 – marbled witch. Moths of the Andes. Letis scops Guenée, 1852 – scops witch moth. Moths of the Andes. Letis specularis Hübner, 1821 (type species) Letis xylia Guenée, 1852

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