| Abbreviation | Definition |
|---|---|
| HAPC | Haitian American Professionals Coalition |
| HAU | Hellenic American Union |
| HC | Happy City |
| HCCU | Havasu Community Credit Union |
| HCCU | Hayward Community Credit Union |
| HCCU | Health Center Credit Union |
| HCCU | Heartland Community Credit Union |
| HCCU | Hibbing Cooperative Credit Union |
| HCDU | Harvard College Debate Union |
| HCDU | Harvard College Debating Union |
| HCDU | Howard College Debating Union |
| HCLU | Hungarian Civil Liberties Union |
| HCU | Heartland Credit Union |
| HCU | Heritage Credit Union |
| HCU | Holyoke Credit Union |
| HDCU | Haghill and Dennistoun Credit Union |
| HEPAC | Hispanic Employee Program Advisory Council |
| HEU | Hospital Employees Union |
| HEU | Hospital Employees' Union |
| HFBCU | Hoosier Farm Bureau Credit Union (Indianapolis, IN) |