Elachista hedemanni is a moth of the family Elachistidae. It is found from Germany to Spain and Romania. It is also found in Ukraine and Russia.
The wingspan is .Lepiforum.de 2012: On species related to Elachista hedemanni Rebel (Lepidoptera: Elachistidae: Elachistinae), with descriptions of three new Palearctic species, Zootaxa 3316: 28-39.
The larvae feed on Carex humilis, Holcus mollis and Stipa pennata. They mine the leaves of their host plant. The mine starts at the base of the blade of a leaf of the previous year. Larvae can be found from July to April.
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