There are 10 mathematicians whose last name begin with PORTN.
| Portnoff, Michael | Massachusetts Institute of Technology | 1978 |
| Portnov, Mikhail | Vrije Universiteit Amsterdam | 2005 |
| Portnoy, Arturo | Rensselaer Polytechnic Institute | 1997 |
| Portnoy, Henry | Imperial College London | 1957 |
| Portnoy, Henry | University of London | 1957 |
| Portnoy, Neil | University of New Hampshire | 1998 |
| Portnoy, Stephen | Stanford University | 1969 |
| Portnoy, William | University of Illinois at Urbana-Champaign | 1959 |
| Portnoy, William | University of Washington | 2005 |
| Portnykh, Vladimir | Voronezh State University |