NRE

NRE, an acronym or initialism, may refer to:


 * National Railway Equipment Company
 * National Rail Enquiries
 * National Register of Electors, in Canada
 * Negative regulatory element
 * New relationship energy
 * Non-recurring engineering
 * In fluid mechanics and heat transfer, NRe is a common notation for the Reynolds number
 * Natural Resources and Environment
 * Australia, see Forests Commission Victoria
 * Malaysia, under the Ministry of Science, Technology and Innovation (Malaysia)
 * United states, Under Secretary of Agriculture for Natural Resources and Environment or USA(NRE)
 * Null Reference Exception (Null_pointer)