Pierre Mallet Guy
- Category : 1897-births
- Type : MGP
- Profile : 5/1 - Heretical / Investigator
- Definition : Single
- Incarnation Cross : LAX Uncertainty 1
French physician after whom is named the 'Mallet-Guy sign,' a medical sign to detect signs of pancreatitis. It is pain elicited with deep palpation of the left subcostal and epigastric region, suggesting pancreatic inflammation. He died on 27 December 1995.