Gregory of Rimini (c. 1300 – November 1358), also called Gregorius de Arimino or Ariminensis, was one of the great scholastic philosophers and theologians of the Middle Ages.

He was the first scholastic writer to unite the Oxonian and Parisian traditions in 14th-century philosophy, and his work had a lasting influence in the Late Middle Ages and Reformation.

He joined the Order of the Hermits of Saint Augustine before studying theology in the 1320s at the University of Paris, where he encountered the ideas of the late Franciscan Peter Auriol.

In the 1330s he taught at Augustinian schools in Bologna, Padua and Perugia, where he became familiar with the recent work of Oxford thinkers such as Adam Wodeham, William Ockham, and Walter Chatton.

[6] Initially, with the intention of defining theology and natural sciences, Gregory developed a theory of sentences to describe scientific knowledge.

Defenders of this view claim that beliefs about the world are too complicated to correspond to specific language structures and thus, cannot serve as objects of scientific knowledge.