HHDC
| Acronym | Definition |
|---|---|
| HHDC | Hispanic Housing Development Corporation (Chicago, IL) |
| HHDC | Harbor Hills Day Camp (Mt. Freedom, NJ) |
| HHDC | Herringbone Half Double Crochet (stitching; clothing) |
| HHDC | Horizon Housing Development Company (St. Louis, MO) |
| HHDC | Hart House Debating Club (University of Toronto) |
| HHDC | Half Hour Data Collection (electricity billing) |
| HHDC | Heihe Hydropower Development Company |