MFI

MFI or M.F.I. may refer to:

Companies and organizations

 * MFI Foundation Inc., non-profit science foundation in the Philippines
 * MFI Group, British furniture retailer
 * Media Factory, Inc., anime company
 * Messiah Foundation International, a spiritual organization
 * Microfinance institution, alternate form of bank in developing countries which provides microcredit lending
 * MindFreedom International, group that fights involuntary therapy
 * Ministers Fellowship International, fellowship of non-denominational charismatic churches
 * Missionary Flights International, a religious charity providing aviation support with DC-3 aircraft

Other

 * MFi Program, "Made for iPhone/iPod/iPad", a licensing program for developers of hardware and software for Apple products
 * Magnetic field imaging, a noninvasive and contact-free cardiac diagnostic method
 * Melt flow index, a measure of the ease of flow of the melt of a thermoplastic polymer
 * Micromechanical Flying Insect, ornithopter robot that flies based on insect flight technique
 * Mikoyan Project 1.44, MiG-MFI, Russian fighter aircraft project (cancelled)
 * Minimum Fisher information, variational principle in information theory
 * Money flow index, indicator in technical analysis