The current study aimed to determine the occurrence of the ovine respiratory syncytial virus (ORSV) infection in sheep employing sandwich enzyme-linked immunosorbent assay (sandwich-ELISA) and look into some disease risk factors. We collected blood samples (n=460) from sheep of various ages and sexes in Babylon Governorate/Iraq. The epidemiological data obtained during the interview with the owners of the animals. The prevalence of ORSV infection at Babylon Governorate was 58.91% based on sandwich-ELISA. The risk factors related to ORSV infection included: sheep with 7months-2years old, imported animals, outdoor feeding, large herd size, in northern parts of the Governorate and winter and spring seasons. There was a significant elevation in RBC, Hb, PCV and a significant reduction in WBC and lymphocytes. There was a significant elevation in AST, CK, LDH, TP, globulin, and total bilirubin. At the same time, there was a significant reduction in albumin, creatinine, and glucose in the infected animals with ORSV. In conclusion, ORSV is prevalent in sheep at Babylon Governorate, with a higher prevalence of the disease in the northern parts of the Governorate. The present report is the first for detecting ORSV antigens in sheep at Babylon Governorate/Iraq.