MRIA
| Acronym | Definition |
|---|---|
| MRIA | Marketing Research and Intelligence Association (also seen as ARIM; Canada) |
| MRIA | Matter Requiring Immediate Attention |
| MRIA | Member of the Royal Irish Academy (humanities/sciences; Ireland) |
| MRIA | Model Railroad Industry Association |
| MRIA | Marine Renewables Industry Association (Ireland) |
| MRIA | Mentally Retarded Infantile Autism (developmental disorder) |