HDCA
| Acronym | Definition |
|---|---|
| HDCA | Hyodeoxycholic Acid |
| HDCA | Human Development and Capability Association |
| HDCA | Historic Downtown Chelan Association (Chelan, WA) |
| HDCA | Harley Davidson Club Almkerk (Netherlands) |
| HDCA | Heavy Duty Construction Adhesive (Bostik) |
| HDCA | Howdy Doody Circus Army (Mad Men) |
| HDCA | High Dose Cytosine Arabinoside |
| HDCA | Hull and District Chess Association (est. 1951; UK) |