FDE

FDE may refer to:


 * Fault detection and exclusion, a technique used in global positioning systems
 * Federal Directorate of Education, an agency of the Pakistani government
 * Fetch-decode-execute cycle, in computer science
 * First-degree entailment, a weakening of paraconsistent logic lacking truths
 * Førde Airport, Bringeland, in Norway
 * Førde Airport, Øyrane, in Norway, closed in 1986
 * Forensic document examination, a synonym of "questioned document examination"
 * FrameMaker Development Environment, part of Adobe FrameMaker
 * Full disk encryption