| Abbreviation | Definition |
|---|---|
| HANJ | Holland Alumni Network in Japan |
| HANJ | Holland Alumni Network Japan |
| HART | Hofstra Alumni Recruitment Team |
| HASAN | Harvard African Students Alumni Network |
| HBSAAA | Harvard Business School African-American Alumni (Massachusetts) |
| HEAA | Harvard Extension Alumni Association |
| HEAA | Human Ecology Alumni Association |
| HEPAC | Higher Education Program Alumni Council |
| HLAA | Hadley-Luzerne Alumni Association |
| HLAC | Hispanic Latino Alumni Council |
| HLRAA | Houston Law Review Alumni Association, Inc. |
| HLSA | Harvard Law School Alumni |
| HPPA | Hornets Policy Politics Alumni |
| HSAA | High School Alumni Association |
| HUAC | Howard University Alumni Club |
| HYAB | Haslam Young Alumni Board |
| IAAA | INROADS Atlanta Alumni Association |
| IAAB | INSEAD Alumni Association Brazil |
| IAASA | INSEAD Alumni Association South Africa |
| IAASM | International Alumni Association of Scuola Mattei |