Pierre Gregoire (born with Toulouse towards 1540 and died with Pont-à-Mousson in 1597) is a Jurisconsulte French.

After having studied with Toulouse, it is lawyer there, then law professor. In 1582, called by the duke of Lorraine, it founds a Faculty of Law to Pont-à-Mousson.

Its Syntaxes artis mirabilis (1578) is indicated of its time by marvellous Art . It is about an encyclopedia of sciences where the magic and the demonology have their place beside astrology and of mathematics. One saw as a Gregoire a continuator of Raymond Lulle.

Works

• Syntaxes artis mirabilis, in libros septem digestae. Per quas of omni Re proposita,… disputari aut tractari, omniumque summaria cognitio haberi potest , Lyon, Ant. Gryphe, 1578.
• Of republica libri sex and viginti , Lyon and Pont-à-Mousson, 1596.