| Acronym | Definition |
|---|
| MHRA | Medicines and Healthcare Products Regulatory Agency |
| MHRA | Modern Humanities Research Association (United Kingdom) |
| MHRA | Minnesota Human Rights Act |
| MHRA | Malta Hotels and Restaurants Association |
| MHRA | Medical and Health Research Association of New York City |
| MHRA | Manufactured Housing Research Alliance |
| MHRA | Missouri Human Rights Act |
| MHRA | Maine Human Rights Act |
| MHRA | Michigan Hot Rod Association |
| MHRA | Multihull Racing Association |
| MHRA | Media Human Resources Association |
| MHRA | Minneapolis Housing and Redevelopment Authority |
| MHRA | Miniature Hot Rod Association |
| MHRA | Michigan Hydroplane Racing Association |
| MHRA | Mental Health Referral Associates (Washington capital area) |
| MHRA | Marine Hills Recreation Association |
| MHRA | Melrose Hall Residents Association (University of Tennessee) |
| MHRA | Managing Health Related Absences (Canada) |
| MHRA | Minority Human Resources Association (Wisconsin) |
| MHRA | Mountain High River Adventures Inc. (Canada) |
| MHRA | Mental Health Resource Associates, PC |
| MHRA | Michiana Horse and Rider Association (Indiana/Michigan) |
| MHRA | Massachusetts Housing Rental Association |
| MHRA | Maximum Hourly Rolling Average |
| MHRA | Mill Hill Residents Association (UK) |