GCM

GCM is a three-letter initialism and may refer to:

• General circulation model (also known as a global climate model), describes climate behavior by integrating a variety of fluid-dynamical, chemical, or even biological equations
• Owen Roberts International Airport, in Grand Cayman, Cayman Islands - IATA airport code
• Galois/Counter Mode, a mode of operation for cryptographic block ciphers
• Great Commission Ministries, a not-for-profit Christian evangelistic organization
• Gift causa mortis, a gift that takes effect on the death of the donor
• Gross Combination Mass, the maximum combined mass of a motor vehicle and its trailers
• Graffiti Cleaning Machine, a 28,300-lb retrofitted hi-rail box truck used by the MTA.
• Gentle Christian Mothers, an online community for Christian mothers who practice attachment parenting
• Gonzalez Capital Management, a privately held asset management company
• Grand Corps Malade, a French slam poet
• Grid Component Model, a programming model for the component oriented programming paradigm in Grid computing
• Gavran Civil Modeller, CAD program for civil engineering
• Global Center Malaysia, Hewlett Packard Global Center located in Malaysia
• Global Commodity Manager, at a high-tech company such as Dell Inc.
• Graphic Communications Management, a printing program at Ryerson University in Toronto, Ontario, Canada
• General Clearing Member, a customer type in clearing
• Generic Component Model, an architectural reference model
• Great Central Mines, a defunct Australian mining company
• Gator Custom Mobility, a Durable Medical Equipment provider operating out of the Southeast United States
• General Counsel Memorandum, Internal Revenue Service Office of Chief Counsel documents explaining various tax code issues.