Articles: K
- Kaiserling's Method
- Kala-Azar
- Kamala
- Kamchatka Resorts
- Kandinsky
- Kantorovich
- Kaolin
- Kaplyun
- Kaposi
- Kapustin
- Karachi
- Karakurt
- Karell Method
- Karl Ernst von Baer
- Karl Flügge
- Karl Pearson
- Karl Posner
- Karl Reyer
- Karl von Basedow
- Karl von Rokitansky
- Karlsbad
- Karlsbad Salt
- Karuzin
- Karyokinesis
- Karyolysis
- Karyorrhexis
- Karyotype
- Kashkadamov
- Katathymia
- Kaufmann
- Kava-Kava
- Kefir
- Keith-Flack Node
- Keller's Malt Food
- Keloid
- Kenotoxin
- Keratin
- Keratinization
- Keratitis
- Keratoconus → see Staphyloma
- Keratoglobus → see Staphyloma
- Keratohyalin
- Keratolysis
- Keratoma
- Keratomalacia
- Keratoplastic Agents
- Keratoplasty
- Keratoses
- Kerion Celsi
- Kernig's Sign
- Kerosene
- Ketones
- Ketonuria
- Ketoses
- Kettle
- Key Experience
- Kholdovsky
- Kholmogorov
- Khotovitsky
- Khozal
- Khvostenko's Symptom → see Spasmophilia
- Kidney Decapsulation
- Kidney Stone Disease
- Kidneys
- Kienböck's Disease
- Kiers
- Kinases
- Kindergarten
- Kinesthesia
- Kinesthetic Sensation
- Kinetic Theory
- Kinetoplast
- Kino
- Kinoplasm
- Kiparsky
- Kirchhoff's Law
- Kishkin
- Kislovodsk
- Kissingen
- Kitasato Filter
- Kitasato, Shibasaburo
- Kitchen
- Kjeldahl Method
- Kleinschmidt-Niemann Mixture
- Kleptomania
- Klikushestvo
- Knee Joint
- Knee Reflex
- Knop's Solution
- Kobert
- Koch
- Koch's Apparatus and Theodor Kocher
- Koelsch
- Köhler's Disease
- Kola
- Kolosov, Aleksandr Aleksandrovich
- Konchalovsky and Conjugation
- Kondoi
- Konig
- König Operation
- Konstantin Klementyevich Skrobansky
- Konstantin Skryabin
- Konstantin von Monakow
- Korte
- Korzhinsky
- Kossel
- KOTIB (Commission for the Improvement of Living Conditions)
- Kovalevsky Alexander
- Kozhevnikov's Epilepsy
- Kraepelin
- Krasnobayev
- Krassovsky
- Kraus's Doctrine
- Kravkov
- Krehl
- Kries
- Krivsky, Leonid Aleksandrovich
- KROL
- Kronecker
- Kronig
- Kronig's Fields
- Kronlein Operation
- Krontovsky, Alexey Antoninovich
- Krukenberg Hand
- Kruse
- Krylov
- Kryukov Adrian
- Kryukov Alexander
- Kuchaidze
- Kuhnt
- Kulchitsky
- Kulchitsky Cells
- Kull Method
- Kulyabko
- Kumis
- Kumisotherapy
- Kurotology
- Kushev, Nikolai Egorovich; Cushing, Harvey Williams
- Kussmaul
- Kussmaul-Tenner Experiment
- Kusso
- Küttner
- Kvass
- Kymography
- Kynurenic Acid
- Kyphosis (or round)
- Kyphosis (or roundback, see)