There are 24 mathematicians whose last name begin with WELS.
| Welsch, Carsten | Johann Wolfgang Goethe-Universität Frankfurt am Main | 2002 |
| Welsch, Cora | Westfälische Wilhelms-Universität Münster | 2018 |
| Welsch, David | Indiana University | 2000 |
| Welsch, Joseph | Friedrich-Alexander-Universität Erlangen-Nürnberg | 1912 |
| Welsch, Lawrence | Rutgers University, New Brunswick | 1979 |
| Welsch, Roy | Stanford University | 1969 |
| Welsch, Yannick | Technische Universität Kaiserslautern | 2013 |
| Welschehold, Tim | Albert-Ludwigs-Universität Freiburg im Breisgau | 2020 |
| Welschinger, Jean-Yves | Université Louis Pasteur - Strasbourg I | 2000 |
| Welsen, Jacob | ||
| Welsh, Alan | Australian National University | 1984 |
| Welsh, Ann | Victoria University of Manchester | 1984 |
| Welsh, Anne | The American University | 1983 |
| Welsh, Charles | University of Wisconsin-Madison | 1990 |
| Welsh, David | University of Notre Dame | 1982 |
| Welsh, Dominic | University of Oxford | 1965 |
| Welsh, Edward | Duke University | 2003 |
| Welsh, James | University of Newcastle | 2004 |
| Welsh, Kenneth | University of British Columbia | 1970 |
| Welsh, Matthew | Rutgers University, New Brunswick | 2019 |
| Welsh, Matthew | University of California, Berkeley | 2002 |
| Welsh, Michael | Victoria University of Wellington | 2014 |
| Welsh, Stewart | University of Glasgow | 1985 |
| Welstead, Stephen | Purdue University | 1982 |