YEC may refer to:
* Year-End Championships, unofficial name of the annual season-ending pro tennis events
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ATP World Tour Finals
The ATP Finals is the season-ending championship of the ATP Tour. It is the most significant tennis event in the men's annual calendar after the four majors, as it features the top eight singles players and top eight doubles teams based on their ...
(men's tennis)
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WTA Championships (women's tennis)
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Yeniche language (ISO 629-3 code), a variety of German spoken in Europe
*
Ying e Chi, a non-profit organization of independent filmmakers in Hong Kong
*
Yorkshire Engine Company
The Yorkshire Engine Company (YEC) was a small independent locomotive manufacturer in Sheffield, England. The company was formed in 1865 and produced locomotives and carried out general engineering work until 1965. It mainly built shunting engi ...
, a former locomotive manufacturer in Sheffield, England
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Young Earth creationism
Young Earth creationism (YEC) is a form of creationism which holds as a central tenet that the Earth and its lifeforms were created by supernatural acts of the Abrahamic God between about 10,000 and 6,000 years ago, contradicting established s ...
, a religious belief that life and earth were created within 6 thousand to about 10 thousand years ago
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Yukon Energy Corporation, a Canadian Crown corporation in the Yukon
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Yecheon Air Base, the IATA code YEC
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