Petrus Ryff
| Petrus Ryff | |
|---|---|
| Born | 8 May 1552 | 
| Died | 19 May 1629 (aged 77) Basel, Swiss Confederacy | 
| Other names | Petrus Ryffius | 
| Education | University of Basel (M.D., 1584) | 
| Scientific career | |
| Fields | Medicine, mathematics, astronomy | 
| Institutions | University of Basel | 
| Thesis | De affectibus cordis (1584) | 
| Academic advisors | Theodor Zwinger, Thomas Erastus, Felix Plater, Johann Nicolaus Stupanus | 
| Doctoral students | Emmanuel Stupanus | 
Petrus Ryff (Swiss Standard German: [riːf]; Latin: Petrus Ryffius; 8 May 1552 – 19 May 1629) was a Swiss mathematician, physician and chronicler.