The Holocaust was one of the most significant events of contemporary history and still has great relevance for current times. This paper analyses the portrayal of the Holocaust in secondary education history textbooks in Spain. As this type of research has grown in the international arena, the need to review critically this event in Spanish textbooks has become ever more evident. This paper reviews what has already been written on this subject in the international arena and makes a number of methodological observations both quantitatively and qualitatively. In the review, a number of deficiencies in the representation of the Holocaust were found. This strongly indicates the need to contextualise the study of the Holocaust and frame it within a structural perspective that would account for its multi-causal origin. Attention is also drawn to the need to improve the content, dispel some myths and improve deficiencies identified in textbooks on the subject.