Abstract: This project will examine the shifts in government abortion policy of Spain since World War II, in efforts to answer the causal question :Why has Spain so dramatically reversed its abortion law mandates from one of the most liberal in Europe to one of the most restrictive? Spain's abortion policy is unique due to opposing forces between the Catholic Church and the socialist government and its universal health care policy. One must examine other historical and social factors to understand this policy. The purpose of this project is to understand how has the abortion policy of Spain (regarding its criminalization of women who receive abortion as well as those who perform them) changed over the last fifty years (approximately since the end of World War II). It will also examine what roles factors such as religion, culture, gender equality, and politics played in the development of these statures. Finally, the study will research the main groups that have been involved in this issue in the last fifty years and what their arguments are to support their opinions. Methods used to investigate this policy and its history of the criminalization of abortion policy in Spain since World War II will include a combination of literature review, government document review, and field research in Spain.