KML or kml may refer to:
- Kamileroi Airport (IATA airport code), Queensland, Australia
- Kemsley railway station (National Rail station code), Kent, England
- Keyhole Markup Language, an XML geospatial data file format
- Korean Mountaineering League, an organization that focuses on the conservation of Korea's mountain environments
- Lower Tanudan Kalinga (ISO 639-3 language code), a language used in Tanudan, Kalinga, Philippines
- Korvpalli Meistriliiga, the Estonian Basketball League
- KiSS Markup Language, an html-like file format used by certain KiSS and Linksys products
- Labuan Matriculation College (Malay: Kolej Matrikulasi Labuan)
- kml, an R software package for longitudinal k-means clustering