SDH
- L-sorbose 1-dehydrogenase
- Serine dehydratase
- Shubnikov–de Haas effect
- Social Democrats of Croatia
- Society for Digital Humanities
- Sorbitol dehydrogenase
- Southern Kurdish
- St David's Hall
- Subdural haematoma
- Subtitles
- Succinate dehydrogenase
- Sudbury Hill Harrow railway station
- Sydney Dental Hospital
- Synchronous digital hierarchy