FDD may refer to:

Politics

* CNDD-FDD, a political party in Burundi *

Forum for Democracy and Development The Forum for Democracy and Development (FDD) is a political party in Zambia. History The FDD was founded in 2001 by former members of the Movement for Multi-Party Democracy (MMD), disaffected by Frederick Chiluba's efforts to change the constit ...

, a political party in Zambia * KAZE-FDD, a political party in Burundi

Science and technology

Floppy disk drive A floppy disk or floppy diskette (casually referred to as a floppy, or a diskette) is an obsolescent type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined w ...

* Frequency-division duplex, a telecommunications duplex indexing method *

Frequency domain decomposition The frequency domain decomposition (FDD) is an output-only system identification technique popular in civil engineering, in particular in structural health monitoring. As an output-only algorithm, it is useful when the input data is unknown. FDD ...

, a system identification technique *

LTE-FDD In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA standards. It improves on those standards' capacity and speed by usi ...

, a 4G telecommunications technology and standard * Timex FDD, a nearly complete computer by Timex *

UMTS-FDD The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the Inte ...

, an air interface standard in 3G mobile telecommunications networks *Fault detection and diagnostics, by

Automated Logic Corporation Automated Logic Corporation is located in Kennesaw, Georgia, United States and manufactures building automation systems. Several of its technological innovations include: the WebCTRL® building automation system; Environmental Index™ tool; Th ...

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 The Foundation for Defense of Democracies (FDD) is a 501(c)(3) non-profit think tank and registered lobbying organization based in Washington, D.C., United States. The group's political leanings have been described as hawkish and neoconservative ...

, 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 {{disambiguation