NRU

NRU may refer to:
 * National Register Of Unemployed
 * Natural rate of unemployment
 * National Reform Union (1864–1867), a political movements in the United Kingdom
 * National Republic of Ukraine
 * People's Movement of Ukraine (Народний Рух України, Narodnyi Rukh Ukrajiny)
 * National Research Universal reactor
 * Nauru, an island country (ISO 3166-1 alpha-3 code: NRU)
 * Neighbourhood Renewal Unit, part of the Department for Communities and Local Government in the United Kingdom
 * Nitrogen rejection unit
 * Northeast Rugby Union
 * Not recently used, a page replacement algorithm