This article, Origin and Identity of the Roma People, is a research project in which it has tried to answer the question: What is it like or what it is to be a Roma? For this, an interdisciplinary way has been used, on the one hand, with a biological investigation through DNA extracted from saliva samples collected from Roma throughout the Spanish territory (more than 150 volunteers) in order to know what the geographical origin of the Roma people of Spain. On the other hand, from a sociological and anthropological perspective to analyse the cultural and identity aspects of the Roma people through 22 interviews and compare them with the results from the analysis of saliva samples. The first results from the study of the DNA of the Roma of the Iberian Peninsula show that the Roma population has also been influenced by the populations of the territory where they have inhabited, from their origin in India, passing through the Balkans and Eastern Europe, until arriving to the Iberian Peninsula, which tells us about a huge diversity, diversity that is corroborated through the interviews analysed in this research, since it is clear that there is no single and infallible way to be a Roma; so there is no doubt that diversity is an essential feature of a transnational people like the Roma people.