Konstantin Landa was a Russian chess grandmaster. He competed in the FIDE World Chess Championship 2004 and FIDE World Cup 2007. In 2011 he was awarded the title of FIDE Senior Trainer.
Konstantin Nikolayevich Leontiev, monastic name: Clement was a conservative tsarist and imperial monarchist Russian philosopher who advocated closer cultural ties between Russia and the East against what he believed to be the West's catastrophic egalitarian, utilitarian and revolutionary influences. He also advocated Russia's cultural and territorial expansion eastward to India, Tibet and China.
Konstantin Grigorievich Makarevich was a Soviet and Kazakhstani glaciologist. He made a significant scientific contribution to the development and popularization of glaciology. He headed the Soviet glaciological expedition on the Tuyuksu glacier from 1956 to 1992 and was the founder of the Tuyuksu glaciological station. For more than 20 years, he was as an official representative of the Soviet Union in the World Glacier Monitoring Service (WGMS). He authored more than 200 scientific articles, monographs, regional and autobiographical books, and essays. Two glaciers and two passes in the Trans-Ili and Dzhungarian Alatau are named after him. He was a veteran of World War II, an order-bearer.
Konstantin Shotayevich Meladze is a Ukrainian-Russian composer and producer. He is the older brother of singer Valery Meladze and co-founder and co-producer of the Ukrainian girl group Nu Virgos.
Konstantin Sergeevich Mereschkowski was a Russian biologist and botanist, active mainly around Kazan, whose research on lichens led him to propose the theory of symbiogenesis – that larger, more complex cells evolved from the symbiotic relationship between less complex ones. He presented this theory in 1910, in his work, The Theory of Two Plasms as the Basis of Symbiogenesis, a New Study of the Origins of Organisms, although the fundamentals of the idea had already appeared in his earlier 1905 work, The nature and origins of chromatophores in the plant kingdom.
Konstantin Petrovich Mikhaylov is a Russian journalist, writer, ethnographer and social activist. One of the initiators of the public movement Arkhnadzor, a member of its Coordination Council. Since 2012, he has been a member of the Civic Chamber of the Russian Federation and a member of the Presidential Council for Culture and Arts.
