Ticks are interesting largely because of their considerable medical and veterinary importance. A study was conducted in Tiaret region with the objective of determining bovine tick species. From the cattle infested, 253 ticks were collected. Four genera; namely Hyalomma, Boophilus, Ripicephalus and Dermacentor and nine species were identified, of which Hyalomma excavatum was the most abundant species comprising 28.46% of the total collected ticks, followed by Boophilusannulatus (18.97%), Hyalomma lusitanicum (15.42%) and Hyalomma detritum (13.44%). The least abundant tick species was Dermacentor marginatus (0.39%). The three monotropic species, recognized as vectors of bovine piroplasmosis in Algeria, represented 41.50% of the total tick population. Among these R. bursa represented 9.09%, H. detritum 13.44% and B. annulatus 18.97%.Which should prompt us to carry out in-depth studies on the diseases transmitted by these ticks and the use of acaricides for the treatment and prevention of infestations by these arthropods.