| Acronym | Meaning |
| MIP | Magnetic Induced Polarization (for Subsurface Characterization) |
| MIP | Microwave Induced Plasma |
| MIP | Macrophage Inflammatory Protein |
| MIP | Major Intrinsic Protein |
| MIP | Mercury Intrusion Porosimetry |
| MIP | Molecularly Imprinted Polymer |
| MIPAES | Microwave-induced Plasma Atomic Emission Spectrometry |
| MIPAS | Michelson Interferometer For Passive Atmospheric Sounding |
| MIPMS | Microwave Induced Plasma Mass Spectrometry |
| MIPS | Munich Information Center For Protein Sequences |
| MIPS | Million Instructions Per Second |
| MIQ | Minimum Identifiable Quantities |
| MIR | Maximum Individual Risk |
| MIR | Mid Infrared |
| MIR | Multiple Internal Reflection |
| MIRA | Multivariate Image Rank Analysis |
| MIRACL | Mid Infrared Advanced Chemical Laser |
| MIRAGE | Migration Of Radioisotopes In The Geosphere |
| MIRC | Michael Initiated Ring Closure |
| MIRIS | Multiple Internal Reflection IR Spectroscopy |
| MIRO | Mineral Industry Research Organization (UK) |
| MIRS | Multiple Internal Reflection Spectroscopy |
| MIS | Management Information System (OSHA) |
| MIS | Metal-insulator-semiconductor (solar Cells) |
| MIS | Mobile Incineration System |
| MIS 5 | Marine Isotope Substage 5e |
| MISA | Municipal-Industrial Strategy For Abatement |
| MISFET | Metal-insulator-semiconductor Field Effect Transistor |
| MISPE | Molecularly Imprinted Solid Phase Extraction |
| MISR | Multi-angle Imaging Spectroradiometer |
| MITE | Miniature Inverted-repeat Transposable Element |
| MITI | Ministry Of International Trade And Industry (Japan) |
| MIVIS | Multispectral IR And Visible Imaging Spectrometer |
| MKP | MAP Kinase Phosphatase |
| MLC | Micellar Liquid Chromatography |
| MLC | Mixed Lymphocyte Culture |
| MLC | Multilayer Ceramic Capacitor |
| MLC | Myosin Light Chain |
| MLCC | Multilayer Ceramic Chip Capacitors |
| MLCFA | Maximum Likelihood Common Factor Analysis |
| MLCK | Myosin Light Chain Kinase |
| MLCPA | Maximum Likelihood Principal Component Analysis |
| MLCT | Metal-to-ligand Charge-transfer |
| MLD | Median Lethal Dose |
| MLD | Magnetic Linear Dichroism |
| MLD | Metachromatic Leukodystrophy |
| MLE | Maximum Likelihood Estimate |
| MLE | Molecular Layer Epitaxy |
| MLEE | Multilocus Enzyme Electrophoresis |
| MLIS | Molecular Laser Isotope Separation |