DFR

DFR may refer to:


 * Cosworth DFR, a 1987 race car engine
 * Dean Forest Railway, Gloucestershire, England
 * Decreasing failure rate
 * Deutscher Frauenring, a political advocacy organisation in Germany
 * Dihydroflavonol 4-reductase, an enzyme class
 * Divergence-from-randomness model, in information retrieval
 * Dounreay Fast Reactor, Scotland
 * Dual fluid reactor