ERF

Erf or ERF may refer to:

Industry

 * Enerplus, a North American energy producer whose stock is listed as ERF under the TSX and NYSE
 * ERF (truck manufacturer), a former British truck manufacturer

Mathematics

 * Error function, erf
 * Exponential response formula

Science and technology

 * Effective radiative forcing, a concept to compare radiative forcing in climate models
 * ERF (gene), coding for ETS domain-containing transcription factor
 * Electrorheological fluid
 * Eukaryotic release factors
 * Event-related field

Other uses

 * Erf (law), in real estate law
 * Erf (river), in Germany
 * Estuarine Research Federation, an American environmental organization
 * Erfurt-Weimar Airport, in Germany (IATA code)
 * European Racquetball Federation
 * European Refugee Fund
 * Extreme Reaction Force, in United States military prisons
 * Reformed Church of France (French: Église réformée de France), a Christian denomination in France