MRN

MRN may refer to:

Businesses and organizations

 * Macquarie Media (ASX: MRN), an Australian media company
 * Michigan Radio Network, a satellite-distributed news service in Michigan, U.S.
 * Migrants Rights Network, a London-based non-governmental organisation
 * Motor Racing Network, the principal radio broadcasting operation of auto racing organization NASCAR
 * National Regeneration Movement (Spanish: Movimiento Regeneración Nacional), a political party in Mexico

Military

 * AN/MRN-1, an instrument approach localizer used by the U.S. Army Air Force during and after World War II
 * AN/MRN-2, a radio range set used by the U.S. Army Air Force during and after World War II
 * AN/MRN-3, a marker beacon set used by the U.S. Army Air Force during and after World War II

Science

 * Magnetic resonance neurography, a medical imaging technique
 * Median raphe nucleus, area within the brain
 * MRN complex, a protein complex involved in DNA repair

Other uses

 * Foothills Regional Airport, IATA airport code
 * Major Road Network, a proposed classification of local authority roads in England
 * Moorabbin railway station,

TV Shows

 * Mister Rogers' Neighborhood