Peste des petits ruminants (PPR) is a devastating and killer disease of domesticated small ruminants particularly sheep & goat. The present study was conducted on the seroprevalence of PPR in sheep in different farms of Bangladesh. Blood samples were collected from 100 non-vaccinated and apparently healthy sheep of 6 months to 2 years of age from sheep farms of Bangladesh Livestock Research Institute, BAU, Kolmakanda, Netrokona and Shesh Moor, Mymensingh. Sera were separated from blood samples and tested by competitive ELISA. Data were analyzed using computerized statistical program. Among 100 tested samples, 16 were found positive (16%). It may be concluded that, in absence of vaccination, the presence of PPRV antibodies indicated that PPR viruses were circulating among the sheep population.