NRO may stand for: National Reconciliation Ordinance, a Pakistani law National Reconnaissance Office, maintains United States reconnaissance satellites National Repertory Orchestra, in Colorado National Review Online, web version of the magazine National Review Nobeyama radio observatory, a division of the National Astronomical Observatory of Japan Non-resident Oriya, an informal term for people of Oriya ancestry Number Resource Organization, allocates IP numbers "Never Really Over", a song by Katy Perry, 2019