ONH

AcronymDefinition
ONHOptic Nerve Hypoplasia
ONHOptic Nerve Head (ophthalmology)
ONHOngkos Naik Haji (Indonesian: Hajj Fees Increases)
ONHOffice of Naval History (US Navy)
ONHOsaka National Hospital (Osaka, Japan)
ONHOld Naval Hospital
ONHOpera New Hampshire
ONHOperation New Hope, Inc. (est. 1999; Jacksonville, FL)