There are 26 mathematicians whose last name begin with OSSS.
| Ossa, Erich | Rheinische Friedrich-Wilhelms-Universität Bonn | 1969 |
| Ossa, Witold | Rheinische Friedrich-Wilhelms-Universität Bonn | 2007 |
| Ossakow, Sydney | University of California, Los Angeles | 1966 |
| Ossandon, Sebastian | École Polytechnique | 2006 |
| Ossanna, Johann | ||
| Osse, Akimou | Université de Neuchâtel | 1994 |
| Osseiran, Adel | Imperial College London | 2010 |
| Ossella, Ilaria | Cornell University | 1999 |
| Ossenberg-Franzes, Friedrich | Technische Universität München | 1973 |
| Ossendrijver, M. | Universiteit Utrecht | 1996 |
| Osserman, Brian | Massachusetts Institute of Technology | 2004 |
| Osserman, Robert | Harvard University | 1955 |
| Osses, Axel | École Polytechnique | 1998 |
| Ossete Ingoba, Winnie | Université Assane Seck Ziguinchor | 2020 |
| Ossewaarde, J. G. | Landbouwuniversiteit Wageningen | 1931 |
| Osseyran, Anwar | Technische Universiteit Eindhoven | 1986 |
| Ossiander, Mina | University of Washington | 1984 |
| Ossman, Kathleen | University of Florida | 1986 |
| Ossona de Mendez, Patrice | École des hautes études en sciences sociales Paris | 1994 |
| Ossorio-Castillo, Joaquín | Universidad de Sevilla | 2019 |
| Ossowski, Jacek | New York University | 1995 |
| Ossowski, Jörn | Rheinische Friedrich-Wilhelms-Universität Bonn | 2010 |
| Ossowski, Piotr | Uniwersytet Mikołaja Kopernika | 2000 |
| Osswald, Bernd | Technische Universität Darmstadt | 1972 |
| Osswald, Gerhard | Universität Stuttgart | 1969 |
| Osswald, Horst | Ludwig-Maximilians-Universität München | 1968 |