This study was aimed to investigate the percentage rates of Cytomegalovirus IgG and IgM seropositivity and their relations to abortion among 185 tested women in Sulaimani city (Iraq) using ELISA technique. The studied cases were included 35 with abortion history, 120 pregnant and 30 controls. The majority of tested women were positive for IgG (90.2%) regardless to the tested groups, the percentage of CMV-IgM positive without IgG was (9.18%), whereas (7.02%) were negative for both IgG and IgM. Statistical analysis showed significant relation between CMV-IgM seropositivity and abortion (p=0.048), whereas no significant relations were found between abortion and CMV-IgG seropositivity (p=0.512). Significant relations were found between CMV-IgG and IgM seropositivity and changes in some haematological parameters included total white blood cells (p=0.000) for all three tested groups, significant differences were found for platelets between both pregnant women with and without abortion and controls (p=0.0206 and 0.0308) respectively. Effects of residency, socioeconomic conditions and previous history of blood transfusion on CMV-IgG and IgM seropositivity were studied and no significant effects were found regarding the tested women groups (p>0.05). No significant effects of CMV-IgG and IgM seropositivity were found on Haematocrit, Lymphocyte, Monocyte and granulocyte counts (p>0.05) for each regarding all three tested women groups.