AbstractBackground: Thrombocytopenia is a common hematologic abnormality during pregnancy. Pregnant women with thrombocytopenia have a higher risk of bleeding during orafter childbirth, particularly if they need to have a cesarean section or other surgical intervention during pregnancy, Labor or in the puerperium. The main aim of this study was to determinethe incidence of thrombocytopenia at GGG hospital Jamnagar among pregnant women attending antenatal care service. Objectives: To access incidence of thrombocytopenia in pregnancy and it’s outcome. To access theincidence of thrombocytopenia among pregnant women a cross sectional study was used on pregnant women attending antenatal care service GGG Hospital, Jamnagar from January to December 2018. A total of 9328 pregnant women taken visit 1110 diagnosed had thrombocytopenia. 100 were included in the study. Blood samples were collected for platelet count and other platelet parameters. Result: A total of 9328 women receiving antenatal care service at GGG Hospital, Jamnagar participated in the study. Thrombocytopenia among 1110 pregnant women showed incidence of 11.9%. The mean ± standard deviation platelet count was 238.85×109/L (±74.57). Thrombo-cytopenia was significantly associated with age group 20-25 year. Conclusion: The incidence of thrombocytopenia was 11.9% predominantly with mild type of thrombocytopenia. Thrombocytopenia was higher among pregnant women who belongs to age group 20-25 year. Health care providers should screen routinely for thrombocytopenia to avoid excessive bleeding during pregnancy, especially in women who belongs to 20-25 year of age.