MCI may refer to:
Organizations
Companies
*
MCI Communications
MCI Communications Corporation (originally Microwave Communications, Inc.) was an American telecommunications company headquartered in Washington, D.C. that was at one point the second-largest long-distance provider in the United States.
...
, originally Microwave Communications Inc., the corporation that operated as MCI from 1963 to 1998
*
MCI Inc.
MCI, Inc. (formerly WorldCom and MCI WorldCom) was a telecommunications company. For a time, it was the second-largest long-distance telephone company in the United States, after AT&T. WorldCom grew largely by acquiring other telecommunicatio ...
, formerly called WorldCom, which acquired MCI Communications, and was later acquired by Verizon Communications
*
Mobile Telecommunication Company of Iran, the largest mobile phone operator in Iran
*
Motor Coach Industries, a coach/bus manufacturing company
*
Music Center Incorporated, later known as Music Consultants Incorporated, a company that manufactured multi-track audiotape recorders and mixing consoles for professional studio recording
* Music Collection International, the music division of
Video Collection International
* MCI,
Frank Farian's record label
Education
*
Maine Central Institute, a boarding school in Maine, US
*
Marine Corps Institute, a coursework of Marine Corps education and training programs
*
Martingrove Collegiate Institute, a secondary school located in Toronto, Ontario, Canada
*
Malvern Collegiate Institute, a secondary school located in Toronto, Ontario, Canada
*
MCI Management Center Innsbruck, a privately organized business school in Innsbruck, Austria
*
Medical Council of India, a statutory body regulating medical education in India
*
Mennonite Collegiate Institute, a private, religious school in the town of Gretna, in Southern Manitoba
*
Middlefield Collegiate Institute, a secondary school located in Markham, Ontario, Canada
*
Museum Conservation Institute, of the Smithsonian Institution
Other organisations
*
Ministry of Communications and Information
The Ministry of Digital Development and Information (MDDI; ; zh, 数码发展及新闻部; ) is a ministry of the Government of Singapore responsible
for overseeing the development of the infocomm technology, media and design sectors, as well ...
, a ministry of the Government of Singapore
*
Motek Cultural Initiative, a Toronto-based nonprofit organization promoting Israeli music and culture
Science and technology
*
Millicurie (mCi), 1/1000 of a curie, a non-SI unit of radioactivity
*
Megacurie (MCi), 1,000,000 times a curie, a non-SI unit of radioactivity
*
Macroinvertebrate Community Index, an index where the presence or lack of macroinvertebrates is used for monitoring stream health in New Zealand
* Magnetic current imaging, using a
scanning SQUID microscope
*
Malicious caller identification, a type of enhanced telephone service
*
Mass-casualty incident, a medical emergency involving more patients than can be easily handled by the crews initially assigned to the incident
*
Media Control Interface, an API for controlling multimedia peripherals connected to a Microsoft Windows or OS/2 computer
*
Meta-circular evaluator, in computing
*
Mild cognitive impairment, a neurological affliction often associated with Alzheimer's disease
* Modulation contrast imaging, a term related to
optical transfer function
Arts, entertainment, and media
*
MasterChef Indonesia, an Indonesian televised cooking competition
Other uses
*
1101 in Roman numerals
*
Kansas City International Airport (IATA airport code:MCI), Missouri, US
*
Meal, Combat, Individual ration, the successor to the US Army C-ration
*
Michigan City station (Amtrak station code), Indiana, US
*
Miss Chinese International Pageant
Miss Chinese International Pageant ( zh, 國際中華小姐競選, formerly 國際華裔小姐競選), or MCI ( zh, 華姐) for short, is an annual international beauty pageant, organized and broadcast by Television Broadcasts Limited, TVB, a net ...
, an annual pageant for international women of Chinese descent
*
Monetary conditions index, a macroeconomic index number relevant for monetary policy
* Short name for
Manchester City F.C.
Manchester City Football Club is a professional football club based in Manchester, England, that competes in the Premier League, the top flight of English football. Founded in 1880 as St. Mark's (West Gorton), they became Ardwick Assoc ...
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