Andrés Ollero Tassara (born May 15, 1944, in Seville, Spain) is an eminent Spanish legal philosopher, jurist, academic, and public servant whose career has spanned over five decades in scholarship, politics, and constitutional adjudication. He is widely recognized for his contributions to legal philosophy, constitutional law, and public ethics.
Ollero completed his law degree with honors at the Universities of Seville, Barcelona, and Murcia, earning a Premio Extraordinario for his academic excellence. Early in his career, he deepened his intellectual formation in philosophy of law and hermeneutics, undertaking doctoral studies and later engaging in research in Germany and Italy under prestigious scholarships. He received his doctorate in 1969, focusing on Spanish juridical tradition and legal thought.
He became a Professor of Philosophy of Law in 1983, teaching first at the University of Granada and later at the Universidad Rey Juan Carlos in Madrid, where he held the chair until his retirement from full-time teaching. Throughout his academic tenure, Ollero published extensively on topics such as constitutionalism, human rights, legal rationality, and the relationship between law and morality. His scholarly output includes more than three hundred scientific publications and several influential books.
In addition to his academic achievements, Ollero had a long career in public service. He was elected Member of the Spanish Parliament (Congress of Deputies) for Granada for five consecutive terms, where he focused on education, justice, and cultural policy, representing the People’s Party (Partido Popular).
In 2012, Ollero was appointedMagistrate of the Spanish Constitutional Court, a position he held for the statutory nine-year term until 2021. After completing his mandate, he holds the status of Magistrate Emeritus.
He has also served as Secretary General of the Instituto de España, a national body uniting Spain’s Royal Academies, and is a member of several prestigious academies, including the Royal Academy of Moral and Political Sciences.
Ollero’s work is marked by a reflective engagement with the foundations of law, the ethical dimensions of democratic life, and the role of reason in public discourse, making him one of Spain’s most influential contemporary jurists.