Abstract: Ticks are features which are apart of metastigmata order. All of these features are parasite of animals which only feed on them. Ticks and disease related, causes economical damages which in some case these damages reaches to million dollars each year. Because of the importance of recognition ticks, particularly Ixodidae, this research has been done on Ixodidae ticks on domestic animals at Kelardasht in Mazandaran Northern Iran. The used method in this research it was cross-section and this ticks were studied on, were collected during 5 month (May to September 2004) from 150 sheep and cattle. From 980 collected samples, 798 numbers of them departed in genus and species and the rest were eliminated. In this study 6 groups species. In Ixodes the only observed species was ricinus, in Boophilus only anulatus species, in Dermacentor only marginatus was identified. But in Haemaphisalis two different species were observed punktata and inermis. In Hyalloma and Ripicephalus bursa was observed. In these study samples the most percentages was seen in Ixodes (26.8 %) and the minimum was in Haemaphisalis (0.2%).