The people residing inside Rajaji Tiger Reserve mainly Gujjars have a great traditional knowledge for curing veterinary ailments. An ethnoveterinary studies on traditional medicinal plants was conducted from 2015-2018 in Rajaji Tiger Reserve, Uttarakhand, India. Information on ethnoveterinary medicinal plants was gathered from communities and Gujjars through informal interviews, questionnaires and discussions. A total 103 medicinal plants species have been used to cure different ailments of livestock. The most common method used for mode of administration was mainly decoction, solution, paste, powder, raw parts, juice and pill. This study was undertaken for importance of traditional knowledge regarding medicinal plants used for curing of different diseases of livestock by the local people and Gujjars residing in the area.