| Rank | Abbreviation | Meaning |
|---|
| ***** | HRCA | Human Rights Commission Act (various locations)
| |
| ***** | HRCA | Human Rights Commission Amendment
| |
| **** | HRCA | Historic Racing Car Association
| |
| **** | HRCA | High Resolution Coverage Area
| |
| **** | HRCA | Hamilton Region Conservation Authority (Canada)
| |
| **** | HRCA | human resources consulting associates
| |
| *** | HRCA | Human Rights Centre of Azerbaijan
| |
| *** | HRCA | Human Resources and College Advancement
| |
| *** | HRCA | Honda Riders Club of America
| |
| *** | HRCA | Human Rights Council of Australia
| |
| ** | HRCA | Human Resources Consulting Association
| |
| ** | HRCA | Human Rights Council of Australia Inc.
| |
| ** | HRCA | Hospital for Rehabilitation of Craniofacial Anomalies
| |
| ** | HRCA | Home Range Core Area
| |
| * | HRCA | Highlands Ranch Cultural Affairs
| |
| * | HRCA | Hudson River Community Association
| |
| * | HRCA | Health Research Communications Award
| |
| * | HRCA | Halton Regional Conservation Authority
| |
| * | HRCA | Hawaii Roofing Contractors Association
| |
| * | HRCA | Human Rights Center of Azerbaijan
| |
| * | HRCA | Health Rights Commission Act
| |
| * | HRCA | Health Research Collaboration Agreement
| |
| * | HRCA | Halton Region Conservation Authority
| |
| * | HRCA | Human Resource Centers of Alaska
| |
| * | HRCA | Hungarian Reformed Churches in America
| |