MFD

MFD may refer to:

Fire departments

 * Madison Fire Department, US
 * Minneapolis Fire Department, US
 * Milwaukee Fire Department, US
 * Mumbai Fire Brigade, India

Science, technology, and medicine

 * Macroscopic Fundamental Diagram, a type of fundamental diagram of traffic flow in transportation engineering
 * Microfarad, a unit of electrical capacitance sometimes written as "MFD"
 * Minimum focus distance, in macro photography
 * Mode field diameter, an expression of distribution of the irradiance, across the end face of a single-mode fiber
 * Modular function deployment, a method for product modularization


 * Multifunction display, an interactive system for presenting various information
 * Mutation Frequency Decline, a gene/gene product used in transcription-coupled repair

Computing

 * Multifunction device, an office all-in-one device (copier, printer, scanner)
 * Micro Floppy Disk, the 3½-inch floppy disk format; See History of the floppy disk
 * Mini Floppy Disk, the 5¼-inch floppy disk format; See History of the floppy disk

Hiring

 * m/f/d, an initialism welcoming "male, female and disabled (or diverse)" candidates.

Transportation

 * Mansfield Lahm Regional Airport (IATA airport code)
 * Minoan Flying Dolphins, a Greek ferry company