Ethmia dimauraorum is a moth in the family Depressariidae. It is found in Costa Rica, where it has been recorded at altitudes between 700 and 1,300 meters (2,300 and 4,300 ft) on the Pacific slope of the Cordillera de Guanacaste, at 750 meters (2,460 ft) in the Cordillera Central and at 1,000 meters (3,300 ft) at the Caribbean side of the Cordillera de Tilarán.