RDF

• Resource Description Framework, a W3C metadata standard used for graphing
• RDF Schema, its language

• Radial distribution function, describes how density varies as a function of distance from a reference particle
• Radio direction finding, techniques used when searching for radio sources
• Random dopant fluctuation
• Reduced dimensions form, a canonical mechanism for solving two-state trajectories
• Relative directivity factor, a figure of merit for directional receiving antennas

• Real degree of fermentation, attenuation of alcoholic beverages
• Refuse-derived fuel

• Radical Dance Faction, a band from the United Kingdom
• RDF Media, a television production company
• Robotech Defense Force, a character group in the US anime television series Robotech
• Rapid Deployment Force: Global Conflict, a video game

• Reserve Defence Forces, the combined military reserve force of Ireland
• Rwandan Defence Forces
• Rapid Deployment Force (United States)

• Reichsbund Deutsche Familie, Kampfbund für erbtüchtigen Kinderreichtum, a German Nazi organisation
• Richard Dawkins Foundation for Reason and Science, UK

• Reality distortion field, a term coined to describe Steve Jobs' charisma

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