Abstract-This study aims to explore socioeconomic and regional variations of obesity among Turkish women at reproductive age (15-49). Using the data from Turkish Demographic and Health Survey, it identifies the socioeconomic determinants of obesity in different regions with different levels of development. Afterwards, it measures income-related obesity inequalities by employing concentration indices. Finally, it decomposes the measured inequalities and obesity gap between eastern and western Turkey into percentage contributions of socioeconomic covariates. Accordingly, age, ethnicity, education, income, marital status and employment are significantly associated with obesity in Turkey. Inequality analysis suggests that obesity is more concentrated among wealthier women in eastern Turkey whereas it is more concentrated among poorer women in western Turkey. Decompositions of the inequalities reveal that the inequalities are predominantly associated with wealth and ethnicity. The findings imply that eastern Turkey reflects the characteristics with of developing countries while western Turkey is closer to developing countries. Therefore, the study suggests that designing specific policies for regions with different levels of development will be useful in reducing the inequalities between eastern and western Turkey. In this respect, it is believed that policies dealing with the nutritional issues of eastern women and policies encouraging healthy behaviour of western women may be useful in reducing the inequalities between eastern and western Turkey.