| Abbreviation | Definition |
|---|---|
| HMC | Hospitality Marketing Concepts |
| HMN | Hospital Marketing National |
| HMS | Home Marketing Services |
| HMSL | Hospital Marketing Services Ltd |
| HMT | Healthy Marketing Team |
| HPMO | High Performance Marketing Optimization |
| HRC | Hotels Restuarant and Catering |
| HSMA | Hospitality Sales and Marketing Association |
| HSMA | Hotel Sales and Marketing Association |
| HSMAI | Hospitality Sales Marketing Association International |
| HSMG | Hot Soup Marketing Group |
| HUXO | Helping U eXcel Online |
| HVDM | Hudson Valley Digital Marketing |
| HYM | High Yield Marketing |
| I2M | Integrated Internet Marketing |
| IA | Interview Assistant |
| IAMS | Insurance Agency Marketing Services |
| IAMS | International Auto Marketing Systems |
| IBDM | International Board Of Digital Marketing |
| IBMM | Ice Box Marketing Management |