| Last Name | First Name | Year Sort descending | City | Section/Speaker Type |
|---|---|---|---|---|
| Papaioannou | C. | 1928 | Bologna | Analysis |
| Parfentieff | N. N. | 1928 | Bologna | Philosophy, History of Mathematics |
| Pascal | M. | 1928 | Bologna | Engineering and Industrial Applications |
| Perron | O. | 1928 | Bologna | Analysis |
| Petrovitch | M. | 1928 | Bologna | Geometry |
| Pfeiffer | G. | 1928 | Bologna | Analysis |
| Picone | M. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Pincherle | S. | 1928 | Bologna | Analysis |
| Pistolesi | E. | 1928 | Bologna | Engineering and Industrial Applications |
| Plancherel | M. | 1928 | Bologna | Analysis |
| Plimpton | G. A. | 1928 | Bologna | Philosophy, History of Mathematics |
| Poletti | L. J. | 1928 | Bologna | Analysis |
| Pólya | G. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Pólya | G. | 1928 | Bologna | Analysis |
| Pomey | L. | 1928 | Bologna | Analysis |
| Popoff | K. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |
| Popovici | C. | 1928 | Bologna | Analysis |
| Prasad | G. | 1928 | Bologna | Analysis |
| Prosciutto | A. | 1928 | Bologna | Engineering and Industrial Applications |
| Puppini | Umberto | 1928 | Bologna | Plenary |
| Quiquet | A. | 1928 | Bologna | Statistics, Mathematical Economics, Probability Calculus, Actuarial Sciences |
| Rademacher | H. | 1928 | Bologna | Analysis |
| Radó | T. | 1928 | Bologna | Analysis |
| Raimondi | E. | 1928 | Bologna | Engineering and Industrial Applications |
| Rainich | G. Y. | 1928 | Bologna | Mechanics, Astronomy, Geodesy, Mathematical Physics, Theoretical Physics |