MSPI

MSPI may refer to:


 * MSPI (nerve agent), an irreversible acetylcholinesterase inhibitor
 * mini-SPI (mSPI), a synchronous serial communication protocol`
 * MspI, a restriction enzyme used in various methods such as the HELP assay
 * Milk soy protein intolerance, a combination allergic intolerance to proteins in both dairy and soy milk; see Milk allergy