K
- Joseph Marie Kampe de Feriet (1893–1982): Kampe de Feriet hypergeometric series
- David Kazhdan, George Lusztig: Kazhdan–Lusztig polynomial
- Lord Kelvin: Kelvin function
- Kibble–Slepian formula
- Kirchhoff: Kirchhoff polynomial
- Tom H. Koornwinder: Koornwinder polynomial
- Kostka polynomial, Kostka–Foulkes polynomial
- Mikhail Kravchuk: Kravchuk polynomial
Read more about this topic: List Of Special Functions And Eponyms