- Kahler disease
- Kaletra
- Kaposi sarcoma
- Kaposi sarcoma-associated herpesvirus
- Karnofsky Performance Status
- Kassebaum Kennedy Act
- kava kava
- keloid
- kelp
- Kemstro
- keratan sulfate
- keratinocyte growth factor
- keratoacanthoma
- ketamine
- ketone
- KGF
- kidney
- kidney cancer
- kidney failure
- kidney function test
- killer T cell
- kilogram
- Kinaret
- kinase
- kit ligand