| Acronym | Definition |
|---|
| MTI | Ministry of Trade and Industry (Singapore) |
| MTI | Metal Technology, Inc. (Albany, OR) |
| MTI | Massage Training Institute (various locations) |
| MTI | Magyar Távirati Iroda (news agency in Budapest, Hungary) |
| MTI | Moving Target Indicator (radar) |
| MTI | Mitchell Technical Institute (Mitchell, SD) |
| MTI | Metal Treating Institute |
| MTI | Multi Terminal Interface |
| MTI | Mandatory to Implement |
| MTI | Medical Teams International (Portland, OR) |
| MTI | Machine Tools India |
| MTI | Music Theater International (licensing; New York) |
| MTI | Moving Target Indication (radar) |
| MTI | Marine Trophic Index |
| MTI | Mediation Training Institute International |
| MTI | Military Training Instructor |
| MTI | Mechanical Technology Incorporated |
| MTI | Medical Tourism Index (International Healthcare Research Center) |
| MTI | Manufacturing Technology, Inc. |
| MTI | Market Transformation Initiative (various organizations) |
| MTI | Massage Therapy Instructor |
| MTI | Material to Inventory (various companies) |
| MTI | Message Type Identifier |
| MTI | Mother Tongue Influence |
| MTI | Muppet Treasure Island (movie) |
| MTI | Market Technologies, Inc. (Charlevoix, MI) |
| MTI | Mechanical Trades Institute (Atlanta, GA) |
| MTI | Marion Technical Institute |
| MTI | Moving Target Identification (radar) |
| MTI | Master Trust Indenture |
| MTI | Mean Total Income |
| MTI | Medical Treatment Injury |
| MTI | Manditory Turn-In Item (US Coast Guard) |
| MTI | Methodology Technical Implementation |
| MTI | Mens Techniek Interactie (Dutch: Human Technology Interaction) |
| MTI | Magnetic Tape Interface |
| MTI | Mach Technologies Incorporated |
| MTI | Multicast Tunnel Interface (computer networking) |
| MTI | Ministria Për Tregti Dhe Industri (Albanian: Ministry of Trade and Industry, Kosova) |
| MTI | Model Technology Incorporated |
| MTI | Maryland Transportation Initiative (University of Maryland) |
| MTI | Maintenance Team Inspection |
| MTI | Memory Technologies, Incorporated |
| MTI | Maximum Tolerable Interference |
| MTI | Mechanical Test Instrumentation |
| MTI | Maintenance Test Interface |
| MTI | Media Technology Initiative (Cooperative Educational Service Agency) |
| MTI | Missed Trigger Interaction |
| MTI | Multispectral Thermal Imager/Imaging |
| MTI | Multiple Tone Interference |
| MTI | Mid-Term Inspection |