- K -
- Kalinichenko, Nikolai
- Kalinin, Alexander
- Kallai, Gabor
- Karcher, Patrick
- Karolyi, Tibor
- Karpow, Anatoly
- Kasparjan
- Kasparow, Garri
- Kasparow, Sergey
- Kastner
- Kaufeld, Jürgen
- Kaufman, Larry
- Keene, Raymond
- Keener, Greg
- Keilhack, Harald
- Kelbratowski, Konrad
- Kemp
- Keres, Paul
- Kern, Guido
- Khalifman, Alexander
- Khodarkovsky, Michael
- Kiewra, Keaton
- Kindermann, Stefan
- King, Daniel
- Kinsman
- Kleine, Peter
- Kling, Josef
- Kmoch, Hans
- Knaak, Rainer
- Koblenz
- Köhler, Peter
- Kohlmeyer, Dagobert
- Kolev, Atanas
- Kongsted
- Konikowski, Jerzy
- Konoval, Yakov
- Kopec, Danny
- Kornev, Alexei
- Kortschnoi, Viktor
- Kosikov, Alexei
- Kosten
- Kosteniuk, Alexandra
- Kostjew, Alexander
- Kostrov
- Kotow
- Kotronias, Vassilios
- Kovacevic, Vlatko
- Kovalchuk, Alexey
- Krasenkov, Michal
- Kravtsiv, Martyn
- Krogius
- Kryakvin, Dmitry
- Kuhn
- Kurz
- Kuzmin, Alexey