Kei or KEI may refer to:
People 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; died 1649) of Japan Kei Nishikori (born 1989), Japanese professional tennis player Kei Garō (ケイ ガロウ; born 1981), Japanese illustrator best known as the original character designer of Hatsune Miku
Automobiles 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 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 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 Kei or Kai Islands, part of the Maluku Islands, Indonesia Kei language 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
See also Kai (disambiguation) KIE (disambiguation)