| Abbreviation | Definition |
|---|---|
| HASS | Humanities, Arts, and Social Sciences |
| HAU | Hanoi Agricultural University |
| HAU | Haryana Agricultural University |
| HAU | Holy Angel University |
| HAY | Hold A Year |
| HB | Humanities Building |
| HBJ | Harvard Business Journal |
| HBKU | Hamad Bin Khalifa University |
| HBKU | Hamad bin Khalifa University (Qatar) |
| HBO | Home Bought Order |
| HBOH | Harvard Board Of Health |
| HBOL | Hermetic Brotherhood of Luxor |
| HBOM | Hopkins Business Of Medicine |
| HBOV | Hogere Beroeps Opleiding Verpleegkunde |
| HBS | Harvard Business School |
| HBSAB | Harvard Business School Association of Boston |
| HBU | Houston Baptist University |
| HC | Human Communication classes |
| HC | Humphrey's Classes |
| HCB | Harvard Club of Boston |