Our aim of the study was to investigate the epizootic situation of parasitoses in the red deer (Cervus elaphus), fallow deer (Dama dama), mouflon (Ovis musimon) and wild boar (Sus scrofa) in Latvia. Research was done throughout the territory of Latvia during the period from year 2009 to 2013. In total 487 deers, 213 fallow deers, 24 mouflons and 315 wild boars coprological samples were investigated, as well in 360 wild boars was performed post mortem diagnostics for infestation agents. Highest infestation of the digestive system comprised strongylida, respectively - red deer IE 48.7%, fallow deer IE 62.5% and mouflon IE 47.1%. The fasciolosis was found only in red deer with extensive infestation 5%. On the other hand paramfistomum was found in both - the red deer IE 8.6% and the fallow deer IE 2.5%. During the investigations of wild boars for protozoa, was found eimeria with IE 84%. Similarly, wild boars were infested with nematodes, in the digestive system’s strongylida IE 62% and strongyloides IE 24, respectively.