There are 13 mathematicians whose last name begin with CLAP.
| Clapham, Christopher | University of Oxford | 1963 |
| Clapham, Paul | California Institute of Technology | 1974 |
| Clapier, F.-C. | Université de Paris | 1919 |
| Clapp, Christopher | University of Virginia | 2013 |
| Clapp, Geoffrey | University of Maryland College Park | 2016 |
| Clapp, Leonard | Massachusetts Institute of Technology | 1994 |
| Clapp, Michael | University of Washington | 1968 |
| Clapp, Mónica | Ruprecht-Karls-Universität Heidelberg | 1979 |
| Clapp, Robert | Washington University in St. Louis | 1971 |
| Clapp, Roger | Harvard University | 1949 |
| Clapp, Timothy | University of Cambridge | 2000 |
| Clapsadle, Raymond | Memphis State University | 1994 |
| Clapton, Janet | Cardiff University | 1985 |