NDR

NDR may refer to:

Computing

 * Non delivery report, a return email message to a sender indicating failed message delivery
 * Network Data Representation, an implementation of the OSI model presentation layer
 * Network detection and response, detection of abnormal system behaviors on network traffic data

Science and technology

 * Negative differential resistance
 * Naming and Design Rules in metadata
 * Neighborhood deformation retract, a kind of topological subspace
 * National Data Repository, a system to store data about a nation's natural resources
 * Nonlinear dispersion relation, in plasma physics

Others

 * Nador International Airport (IATA code name: NDR), airport in Morocco
 * National Driver Register, United States
 * Norddeutscher Rundfunk, a public radio and television broadcaster in northern Germany
 * Norwich Northern Distributor Road or Broadland Northway, a major route around the north of Norwich, England
 * Singapore National Day Rally, an annual address that the Prime Minister of Singapore makes to the nation
 * Non-invasive disc rehabilitation, NDR Method
 * Nash Dom Rossiya (Наш Дом Россия, Our Home – Russia), Russian political party
 * North Diversion Road, which is a nickname to North Luzon Expressway and formerly its official name