There are 6 mathematicians whose last name begin with RIK.
| Riker, David | Massachusetts Institute of Technology | 1996 |
| Riker, William | Harvard University | 1948 |
| Rikkonen, Harri | Helsingin yliopisto | 1961 |
| Rikovska, Jirina | ||
| Rikun, Alexander | Massachusetts Institute of Technology | 2011 |
| Rikuna, Yūichi | Waseda University | 2003 |