SDHD
| Acronym | Definition |
|---|---|
| SDHD | Succinate Dehydrogenase Complex, Subunit D |
| SDHD | Southeastern District Health Department (Idaho) |
| SDHD | Siouxland District Health Department (Sioux City, IA) |
| SDHD | San Diego Harley Davidson (San Diego, CA) |
| SDHD | South Dennis Historic District (Massachusetts) |