Aim: Obesity is defined by the World Health Organization as “normal or excessive fat accumulation in the body enough to affect health negatively”. Increasing prevelance of obesity is a serious problem for health service of the pregnant women. Obesity is an important problem for the pregnant women and is considered as the most important problem and is of top priority in terms of the complications it causes. Obesity is a health problem reducing daily life activities and affecting directly the life quality due to its social and psychological effects, and significant deteriotation could be seen regarding obesity in pregnancy. This study was conducted to evaluate the quality of life and the prevalence of obesity in pregnancy. Methods: This study was conducted on 400 pregnant women who applied to the Family Health Center in a year. Data collection tool "Obesity in Pregnancy Assessment Questionnaire" form and the "SF-36 Quality of Life Scale" was used. Chi-square test and student t-test were used in statistical evaluation. Results: Prepregnancy obesity prevelance was found 18.8%. Obesity was observed statistically between age and family income status, family history of obesity, daily sleep and watching television, number of live births, history of macrosomic baby, last birth type, skip repast, eating fas, eating at night and eating fast food habits found significant difference (p<0.05). There was a statistically significant correlation between presence of chronic disease, regular physical activity, marriage duration and infertility treatment and obesity (p <0.001). Conclusion: It was determined that pre-pregnancy women with BMI ≥ 30 kg / m² had lower quality of life in gestation. In this context, prenatal care in obese pregnancies is more important than normal weight pregnancies. For obese women who are considering pregnancy, weight loss diet and exercise programs should be planned before pregnancy.