This study was carried out to determine the seroprevalence of Dirofilaria immitis in dogs in Elazığ and vicinity. A total of 120 dogs at different ages, sexes and breeds were used as material in this study. Blood samples were examined with nativ and ELISA techniques. The prevalence of D. immitis was determined as 9.1% in Elazığ and its vicinity. The highest prevalance of D. immitis was observed in 5-8 age group (18.2%), which was followed by 2-4 (10.0%) and 1-2 age group (1.8%). More male (10.3%) than female (7.6%) dogs were affected in this study. Among the controlled regions, the maximum prevalance was found in Sivrice (20.0%), Keban (20.0%) and Kovancılar (13.3%).