Tatyana Kachalova (nee Rozenshild; 1915–2010) – Habilitated Doctor of Arts, professor of Latvian Academy of Arts. >>

Varvara Kachalova (1930–2020) – a harp player and teacher. >>

Vsevolod Kachan (1955) – Doctor of Philosophy, associate  professor of the University of Latvia. >>

Ludmila Kachkalda (1949-2010) – World Champion in rhythmic gymnastics (1967, 1973). >>

Matvey Kadek (1897-1950) – Doctors of Geography, academitian and the 1-st vice-president of the Academy of Science of Latvian SSR,  rector  of Latvian State University (1944-1949). >>

Vasily Kalberg (1893–1983) – professor, creator of the post-war school of Latvian Anatomists, rector of Riga Medical Institute (1958–1963), outstanding teacher. >>

Theodor-Ferdinand Kalep (1866–1913) – inventor, businessman, production organizer, worked at Riga enterprises «Lange and son», «Motor» and «Russo-Balt». >>

Alexander Kalery (1956) – Soviet and Russian cosmonaut. Born in Latvia  (Jūrmala) in 1956. >>

Nikolay Kalinin (1910-2004) – professor, the 1-st rector of Riga Institute of Civil Aviation Engineering (1960-1965). >>