There are 10 mathematicians whose last name begin with INS.
| Insall, Matt | University of Houston | 1989 |
| Insel, Arnold | University of California, Berkeley | 1969 |
| Inselberg, Alfred | University of Illinois at Urbana-Champaign | 1965 |
| Inselmann, Edmund | University of Pennsylvania | 1962 |
| Insfran Pelozo, Jose | University of Illinois at Urbana-Champaign | 1998 |
| Insinger, François | Technische Universiteit Delft | 1965 |
| Insko, Chester | University of California, Berkeley | 1963 |
| Insko, Erik | The University of Iowa | 2012 |
| Installé, Arnaud | Katholieke Universiteit Leuven | 2014 |
| Insua Hermo, Manuel Avelino | Universidad de Vigo | 2005 |