Xavier Tilliette (23 July 1921 – 10 December 2018) was a French philosopher, historian of philosophy, theologian, and Jesuit Catholic priest.

Xavier Tilliette also taught philosophy at various universities as a "visiting professor" in France and abroad:[1] Lima, Santiago, Berlin, Bremen, Fribourg, Heidelberg, Hamburg, Munich, Bonn, Tübingen, Turin, Ferrara, Urbino, Rome, Macerata, Naples, Palermo.

He spoke fluent English, Italian, German and Spanish, in addition to Latin, Greek and Hebrew, and he read Portuguese and Danish.

Among his teachers, disciples, or friends, along with Wahl and Jankélévitch,[7] were Hans Urs von Balthasar, Karl Rahner, Henri de Lubac, Gaston Fessard,[1] Hans Georg Gadamer, Jürgen Habermas, Maurice Merleau-Ponty, Jean-Paul Sartre, Louis Bouyer, Jean Daniélou, Emmanuel Levinas, Paul Ricœur, Gabriel Marcel, Ambroise-Marie Carré, Yves Congar, Michel de Certeau, Stanislas Fumet, Maurice de Gandillac, Paul Doncœur, Pierre Blet, Marcel Brion, Robert Bresson, Enrico Castelli, Luigi Pareyson, Giuseppe Riconda, Michel Henry, Claude Bruaire, Jean Greisch, François Varillon, Albert Vanhoye, Jean-Luc Marion, Jean-Louis Vieillard-Baron, Francesco Tomatis.

He was a member of the Istituto Italiano per gli Studi Filosofici and of the Bavarian Academy of Sciences and Humanities (Bayerische Akademie der Wissenschaften of Munich), the Centro studi filosofico-religiosi Luigi Pareyson, and, since 2006, a corresponding member Accademia di estetica internazionale de Rapallo.