CALM

CALM may refer to: The Campaign Against Living Miserably (CALM), a UK charity aimed at bringing down the suicide rate amongst young British males.
Café-au-lait macules("spots") as seen in the medical condition neurofibromatosis
Communications, Air-interface, Long and Medium range, a standardized set of air interface protocols and parameters for medium and long range, high speed ITS communication
Department of Environment and Conservation (Western Australia), formerly named the Department of Conservation and Land Management (CALM).
Commercial Advertisement Loudness Mitigation Act