| MATS | Macomb Auto Theft Squad 
| Others |
| MATS | Make Art That Sells
| Others |
| MATS | Management Assignment Tracking System
| Others |
| MATS | Master of Arts in Theological Studies
| Others |
| MATS | MAterial Transport Segment
| Others |
| MATS | Materials and Testing Services
| Others |
| MATS | Measurements with Advanced Trapping Systems
| Others |
| MATS | Medical Assistant Training School
| Others |
| MATS | Mercury Air Toxics Standards
| Others |
| MATS | Mercury and Air Toxics Standards
| Others |
| MATS | Metropolitan Adelaide Transport Study
| Others |
| MATS | Michigan Athletic Trainers Society
| Others |
| MATS | Mid America Truck Show
| Others |
| MATS | Mid America Trucking Show
| Others |
| MATS | Mid American Tumbling Society
| Others |
| MATS | Mid Atlantic Target Satellite
| Others |
| MATS | Mid Atlantic Transportation Sustainability
| Others |
| MATS | Milestone Automated Tracking System
| Others |
| MATS | Military Academy and Training School
| Others |
| MATS | Military Air Transport Service
| Others |
| MATS | Ministerial Association Temporary Shelter
| Others |
| MATS | Module and Tutorial System
| Others |
| MATS | Monadnock Area Transitional Shelter
| Others |
| MATS | Montgomery Area Transit System
| Others |
| MATS | Mopars At The Strip
| Others |
| MATS | Multiple Application Tracking System
| Others |
| MATS | Multivariate Analysis of Transcript Splicing
| Others |
| MATS | Musculoskeletal Assessment and Treatment Service
| Others |
| MATS | Muskegon Area Transit System
| Others |