| Acronym | Definition |
|---|
| MTT | 3-(4,5-Dimethylthiazol-2-Yl)-2,5-Diphenyltetrazolium Bromide |
| MTT | Mobile Task Team |
| MTT | Ministerio de Transportes y Telecomunicaciones (Spanish) |
| MTT | Meaning Text Theory |
| MTT | Multi Troop Transport (Star Wars) |
| MTT | More Than Traffic |
| MTT | Magyar Telefonkönyvkiadó Társaság (Hungary) |
| MTT | Model Transformation Tools |
| MTT | Multi-Transaction Timer |
| MTT | Minatitlan Airport (Mexico) |
| MTT | Modus Tollendo Tollens (logic) |
| MTT | Metropolitan Transport Trust |
| MTT | Mestska Televizia Trnava (Slovakian) |
| MTT | Minimum Time Track (navigation) |
| MTT | Magnetic Tape Transport |
| MTT | Martinique Travail Temporaire (French) |
| MTT | Multi-Task Trainer |
| MTT | Magyar Tolkien Társaság (Hungarian: Hungarian Tolkien Society; est. 2002) |
| MTT | Multi-Task Trebuchet |
| MTT | Magnetic Tunnel Transistor |
| MTT | More Than Toast |
| MTT | Maa- ja Elintarviketalouden Tutkimuskeskus (Finnish: Agrifood Research) |
| MTT | Missionary Tech Team |
| MTT | Monthly Transit Talk |
| MTT | Maude Termination Tool |
| MTT | Maritime Telephone & Telegraph |
| MTT | Multiple Target Tracker |
| MTT | Maritime Trade Towers |
| MTT | Ministria e Transportit Dhe Telekomunikacionit (Albanian: Ministry of Transport and Telecommunication, Kosova) |
| MTT | Maori Tourism in Taranaki |
| MTT | Marine and Transport Technology |
| MTT | Malignant Trophoblastic Tumor |
| MTT | Moving Target Tracker |
| MTT | Colorimetric Thiazoyl Blue |
| MTT | Ministry Training Team |
| MTT | My Term Tracker |
| MTT | Move to Trash |
| Mtt | TTbar Invariant Mass |
| MTT | Mitrovica Turk Toplumu (Mitrovica Turkish Community, Kosovo) |
| MTT | Mobile Test Team |
| MTT | Maintenance Technician Tool |
| MTT | Medical Triage Trainer |
| MTT | Mission Trial Test |
| MTT | Mega Travel Trailers |
| MTT | Morgan Township Trustees |
| MTT | Master of Theatre and Television |
| MTT | Medical Training Team |
| MTT | Motion to Table (legislative procedure) |
| MTT | Modular Test Toolkit |
| MTT | Motion Tech Trends |
| MTT | Master Technology Teacher |
| MTT | Microwave Theory and Techniques |
| MTT | Muang Thong Thani (Thailand) |
| MTT | Marine Turbine Technologies |
| MTT | Mobile Tactical Training |
| MTT | Meridian Tapping Technique (alternative health method) |
| MTT | Methodology, Tools and Techniques |
| MTT | Michael Tilson Thomas |
| MTT | Mao Tse-Tung |
| MTT | Military Training Team |
| MTT | Mobile Transaction Terminal |
| MTT | Multi-Table Tournament (poker) |
| MTT | Mobile Training Team |
| MTT | Medium Tactical Transport (US Army) |
| MTT | Mock Trial Training (North Carolina Bar Association) |
| MTT | Machine Tool Technology |
| MTT | Multiregional Transit Telecom (Russia) |
| MTT | Multi-Target Tracking |
| MTT | Mean Transit Time (brain tissue blood flow) |