- KLK1
- KLK7
- KLKB1
- KMT2C
- KMT2D
- KNN
- KOH test
- KRAS
- KRT8
- Kabuki syndrome
- Kaempferia galanga
- Kaempferol
- KaiA
- KaiC
- Kainate receptors
- Kainic acid
- Kairomone
- Kala-azar
- Kalanchoe
- Kaliuresis
- Kallidin
- Kallikrein
- Kallikrein kinin system
- Kallmann syndrome
- Kama
- Kampo
- Kanamycin
- Kangaroo care
- Kaolin
- Kaolinite
- Kaplan-Meier method
- Kaposi's sarcoma
- Kappa opioid receptor
- Kappa statistics
- Karl Fischer titration
- Karnofsky Performance Status
- Karoshi
- Kartagener syndrome
- Karyogamy
- Karyokinesis
- Karyolysis
- Karyopherin
- Karyorrhexis
- Karyotype
- Karyotyping
- Kasabach-Merritt syndrome
- Kasai procedure
- Kashin-Beck disease
- Kassinin
- KatG
- Kaurenoic acid
- Kava
- Kavain
- Kavalactones
- Kawasaki disease
- Kawasaki syndrome
- Kayser-Fleischer ring
- Kdm3b
- Kdm5a
- Kdm5b
- Kearns-Sayre Syndrome
- Kearns-Sayre syndrome
- Kegel exercises
- Kehr's sign
- Kell
- Keloids
- Kendall rank correlation coefficient
- Keratan sulfate
- Keratin
- Keratin 1
- Keratin 13
- Keratin 14
- Keratin 17
- Keratin 18
- Keratin 4
- Keratin 6A
- Keratin pearl
- Keratinase
- Keratinization
- Keratinocyte growth factor
- Keratinocytes
- Keratins
- Keratitis
- Keratitis-ichthyosis-deafness syndrome
- Keratoacanthoma
- Keratoconjunctivitis
- Keratoconjunctivitis sicca
- Keratoconus
- Keratocyst
- Keratocytes
- Keratoderma
- Keratoglobus
- Keratohyalin
- Keratolytics
- Keratomalacia
- Keratometer
- Keratomileusis
- Keratopathy
- Keratoplasty
- Keratoprosthesis