RMO

RMO may refer to:


 * Chișinău International Airport, Moldova; IATA airport code RMO
 * Racemethorphan
 * Rahul Mohindar oscillator
 * Regional Mathematical Olympiad, the second stage in India for selection to India's IMO team
 * Regimental Medical Officer
 * Resident Medical Officer
 * Rijksmuseum van Oudheden
 * RMO (cycling team)
 * RMO (Norwegian resistance)
 * Rocky Mountain oysters