K
- Pieter Kaas nl:Pieter Kaas
- E. Alison Kay
- Myra Keen, from the USA
- Louis Charles Kiener
- Jared Potter Kirtland
- Jørgen Knudsen (born 6 March 1918), from Denmark
- Wilhelm Kobelt
- Heinz Albert Kollmann, Heinz A. Kollmann (1939), from Austria, prehistoric gastropods, website
- Yoshio Kondo (1910–1990), from Hawaii
- Dieter Korn
- Arthur Krause (1851–1920), from Germany
- Christian Ferdinand Friedrich Krauss
- Endre Krolopp (1935–2010), from Hungary, interested in Quaternary and Tertiary molluscs
- Tokubei Kuroda
- Heinrich Carl Küster (1807-1876), from Germany, uncle of Emil Küster (1838-1921)
Read more about this topic: Malacologist