HCAS
| Acronym | Definition |
|---|---|
| HCAS | Hope College Arts and Sciences (St. Pompan Beach, FL) |
| HCAS | Human Capital Advisory Services |
| HCAS | Helsinki Collegium for Advanced Studies (University of Helsinki; Finland) |
| HCAS | Howard County Autism Society (Columbia, MD) |
| HCAS | Harford County Astronomical Society (est. 1970; Bel Air, MD) |
| HCAS | Helicopter Close Air Support |
| HCAS | Holy Child Auxilium School |