Two species of demodectic mites were described in the red deer Cervus elaphus, including Demodex kutzeri, which had also been found in other species of the Cervidae family in Austria, Germany, Czech Republic, Poland and North America. Whereas the other species, D. acutipes, had been previously known from only one finding in the Czech Republic. The present research included skin samples taken in winter 2012 from thirty red deer in northern Poland. Demodex acutipes (prevalence 20%, mean intensity 4.5), D. kutzeri (53.3%, 69.8) and fifteen Demodex sp. specimens (6.7%, 7.5), were found. D. acutipes is a new species for the fauna of Poland.