__notoc__
| Konstantin Posse | |
| Birth Date: | September 29, 1847 |
| Birth Place: | Novgorod Governorate, Russian Empire |
| Death Place: | Leningrad, RSFSR, Soviet Union |
| Nationality: | Russian |
| Fields: | Mathematics |
| Workplaces: | Odessa State University |
| Alma Mater: | St. Petersburg State University |
| Doctoral Advisor: | Pafnuty Chebyshev |
| Doctoral Students: | Veniamin Kagan D. D. Morduhai-Boltovskoi |
Konstantin Alexandrovich Posse (Russian: Константин Александрович Поссе; September 29, 1847 - August 24, 1928) was a Russian mathematician known for contributions to analysis and in particular approximation theory.[1] Veniamin Kagan and D. D. Morduhai-Boltovskoi were among his students.