GNR

In music

• Guns N' Roses, a hard rock/heavy metal band from Los Angeles, California
• GNR, a Portuguese rock band.

Railways

• Great Northern Railway of Great Britain.
• Great Northern Railway of Ireland. (usually GNR(I))
• Great Northern Railway of the United States.
• Georgia Northeastern Railroad, in the U.S. state of Georgia.

Roads

• Great North Road, Africa
• Great North Road, Australia
• Great North Road, British Columbia
• Great North Road, New Zealand
• Great North Road, United Kingdom
• Great North Road, Zambia

Paramilitary organizations

• Republican National Guard - Portuguese National Republican Guard; Portuguese gendarmerie
• National Republican Guard of Italian Social Republic (1943-45). Replaced the MVSN and the Carabinieri military police......