| 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) |