Wikipedia
RDH
RDH may refer to:
- Registered Dental Hygienist, a licensed dental professional who specializes in preventive oral health
- Retinol dehydrogenase, an enzyme
- Royal Darwin Hospital, a teaching hospital located in the northern suburbs of Darwin, Northern Territory
- Reginald D. Hunter, an American stand-up comedian based in the United Kingdom
- Reference datum height, an aviation metric