MSI
MSI commonly identifies the Taiwanese computer‑hardware maker Micro‑Star International, and the letters also appear in software installation terminology, corporate names like Motorola Solutions, and occasionally in scientific or music contexts.
Medical
Miscellaneous
Migration Series Instruction
MedShare International
Major Service Interruption
Manure Spreading Index
MineSweeper, In-shore
Metabolomics Standards Initiative
Measurement Systems International
Meritorious Service Increase
Community
Governmental
Multi-Spectral Imagery
Medium-Scale Integration
Multiple Sources Of Income
First year of Military Science
MicroSatellite Instability
Maritime Safety Information
Modified Surface Index
Multispectral Imagery
Maintenance Significant Item
Minnesota Supercomputing Institute
Academic & Science
Modified Supplemental Instruction
Minority Serving Institution
Masonry and Structural Improvements
Microelectronics Society Of India
Molecular Simulations, Inc.
Music or Speech Item
Mean Squared Intercept
Microbial Sciences Initiative
Computing
Microsoft Software Installation
Multi Service Interface
Mobile Software Initiative
Magnetic Source Imaging
Medical Services Insurance
Man-System Integration
Message-Signaled Interrupt
Internet
Business
Movie Star, Inc.
Molecular Simulations, Incorporated
Mayfair Storage Interconnect
Maharishi Sadashiva Isham
Management Services Incorporated
Micro Star International
Metapath Software International
Multispectral Solutions, Inc.
Micro Systems International
Ms Intl.
Morneau Sobeco Income Fund
Multistack International Ltd
Macintyre Strater Internatational
Motorola Solutions Inc
Management Systems International
Marketing Science Institute
Montgomery Soccer Inc
Management Services of Illinois
Member of Securities Institute