- What is: Know Your Numbers (health awareness)
- What is: Kramer’s Syndrome
- What is: Klippel-Feil Syndrome
- What is: Key Performance Indicators (KPI) in health
- What is: Kyanosis
- What is: Kinetoplastida
- What is: King Crab Syndrome (rare)
- What is: Knowledge Transfer (in health)
- What is: Kingdom of Microorganisms
- What is: Kidney Stones