FDD

FDD may refer to:

Politics

 * CNDD-FDD, a political party in Burundi
 * Forum for Democracy and Development, a political party in Zambia
 * KAZE-FDD, a political party in Burundi

Science and technology

 * Familial Danish dementia, a rare form of dementia


 * Floppy disk drive
 * Frequency-division duplex, a telecommunications duplex indexing method
 * Frequency domain decomposition, a system identification technique
 * LTE-FDD, a 4G telecommunications technology and standard
 * Timex FDD, a nearly complete computer by Timex
 * UMTS-FDD, an air interface standard in 3G mobile telecommunications networks
 * Fault detection and diagnostics, by Automated Logic Corporation

Other uses

 * Feature-driven development, a project management approach
 * Forces for the Defense of Democracy, a rebel group in Burundi
 * Foundation for Defense of Democracies, a policy institute based in Washington, D.C., US
 * Franchise disclosure document (2008), UFDD/UFOC Uniform Franchise Offering Circular
 * The Danish Scout Council, formerly the Fællesrådet for Danmarks Drengespejdere
 * "F.D.D.", the opening theme to the anime Chaos;Head sung by Kanako Itō