NRO

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