NRO

NRO may stand for:
 * National Reconciliation Ordinance, a Pakistani law
 * National Reconnaissance Office, maintains United States reconnaissance
 * 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