CFD may refer to:

Science and computing

• Computational fluid dynamics, a branch of fluid dynamics
• Counterfactual definiteness, the ability, quantum mechanics, to consider results of unperformed measurements
• Cfengine Daemon, the process that runs Cfengine
• Common Fill Device, an electronic module used to load cryptographic keys into electronic encryption machines
• Constant fraction discriminator, a signal processing component

Firefighting organisations

• Calgary Fire Department, the fire department of Calgary, Alberta
• Charlotte Fire Department, the Fire Department of Charlotte, North Carolina
• Chicago Fire Department, the fire department of Chicago, Illinois

Other

• Control Flow Diagram, is a diagram to describe the control flow of a business process, process or program
• Cumulative Flow Diagram, an area graph that depicts the quantity of work in a given state
• Contract For Difference, a type of financial derivative, where two parties exchange the difference between opening and closing value of an underlying asset
• Cheyenne Frontier Days, an annual rodeo and celebration held in Cheyenne, Wyoming
• Christie Front Drive, a second wave indie/emo band from Denver, Colorado
• Coulter Field (IATA: CFD), an airport in Bryan, Texas
• Compagnie des chemins de fer départementaux, (Compagnie des chemins de fer départementaux french), French rail vehicle manufacturer producing narrow gauge rail vehicles

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