Kei or KEI may refer to:
People
edit- Kei (given name)
- Kei, Cantonese for Ji (姫)
- Kei, Cantonese for Qi (奇, 祁, 亓)
- Shō Kei (1700–1752), king of the Ryūkyū Kingdom
- Kei (singer) (born 1995), stage name of South Korean singer Kim Ji-yeon
- Princess Kei (Keihime) of Japan
- Kei Nishikori, Japanese professional tennis player
Automobiles
edit- Kei car, a Japanese category of small automobiles
- Suzuki Kei, a kei car produced by Suzuki between 1998 and 2009
- Kei truck, a Japanese category of small pickup trucks
In fiction
edit- xxxHolic: Kei, the second season of the anime
- Sir Kei or Sir Kay, a character in Arthurian legend
- Kei, a character in Akira media
- Kei, a character in Dirty Pair media
- Kei, a character in the Ape Escape universe
- Kei, a fictional country in Twelve Kingdoms media
- Kei, a character in Moon Child
- Kei Nagase, a character in the Ace Combat universe
- Kei, short for Keiichiro, a character in Wangan Midnight and Wangan Midnight Maximum Tune
KEI
edit- Knowledge Ecology International, dealing with issues of intellectual property
- Knowledge Economic Index, on knowledge economy
- Keyword Effectiveness Index for a web site
- Kinetic Energy Interceptor, former planned American missile defense program
- Keithley Instruments, NYSE symbol
Other uses
edit- Kei or Kai Islands, part of the Maluku Islands, Indonesia
- kei(x), one of the Kelvin functions
- Kei school of Buddhist sculpture, Japan
- Kei Rail, a South African rail project
- Kei cricket team, South Africa
- Kei, subgroup of the Kugyō in the Japanese pre-Meiji court
- Great Kei River, in South Africa
- a style in Japanese street fashion or a Japanese pop subculture, e.g. Visual kei
- Kei (ritual gong), a Japanese musical instrument