FDM

FDM may refer to:

Science and technology

 * Fat in dry matter, a food content measurement
 * Finite difference method, a numerical method for solving differential equations
 * Free Download Manager, a download manager for Windows and macOS
 * Frequency-division multiplexing, a signal multiplexing method
 * Functional Database Model, a technique in business and financial planning
 * Fused deposition modeling, a 3-D printing technique, see: FFF
 * Fascial distortion model, an anatomical and physiological model of medicine

Other

 * fdm (software), a program to fetch, filter and deliver email
 * FDM Group, a British IT service company
 * Federation of Danish Motorists
 * Funeral doom metal
 * First degree murder
 * Flight Data Monitoring