Xavier Tilliette (23 July 1921 – 10 December 2018) was a French philosopher, historian, and theologian. He was born in Corbie, Somme. He was a former student of Jean Wahl and of Vladimir Jankélévitch.

Tilliette was a member of the Society of Jesus (1938) and professor emeritus at the Catholic Institute of Paris (1969), having taught also at the Pontifical Gregorian University of Rome (1972), the Lateran University, and the Centre Sèvres in Paris.^[1]

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.^[1]

Tilliette was knight of the Légion d'honneur and of the Order of Merit of the Italian Republic.^[1]

Tilliette died in Paris on 10 December 2018 from pneumonia at the age of 97.^[2]