Elachista andorraensis is a moth of the family Elachistidae. It is found in Andorra.
Remarks: The species was described on the basis of a single male with incomplete genitalia. It is close to, if not conspecific with E. triseriatella based on those characters that remain (see Traugott-Olsen 1988). Its status can be established only with further material from the type locality (Andorra).