HDSB
| Acronym | Definition |
|---|---|
| HDSB | Halton District School Board (Ontario, Canada) |
| HDSB | Heavy Dry Support Bridge |
| HDSB | Happy Days String Band (est. 1973; New Jersey) |
| HDSB | Hexasoft Development Sdn. Bhd. (Bradenton, FL) |
| HDSB | Harvard Divinity School Bulletin (Cambridge, MA) |