X12 or X-12 may refer to:
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X12 (New York City bus)
The Metropolitan Transportation Authority (MTA) operates 80 express bus routes in New York City, United States. Express routes operated by MTA Bus Company are assigned multi-borough (BM, BxM, QM) prefixes. MTA New York City Bus operates seven ...
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ASC X12
The Accredited Standards Committee X12 (also known as ASC X12) is a standards organization. Chartered by the American National Standards Institute (ANSI) in 1979, it develops and maintains the X12 Electronic data interchange (EDI) and Context Ins ...
, the standard for the development and maintenance of Electronic Data Interchange standards for the United States
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Convair X-12, an advanced testbed for the Atlas rocket program
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Cummins X12, a diesel engine
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SJ X12, a Swedish train.
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X-12-ARIMA
X-13ARIMA-SEATS, successor to X-12-ARIMA and X-11, is a set of statistical methods for seasonal adjustment and other descriptive analysis of time series data that are implemented in the U.S. Census Bureau's software package. These methods are or ...
, software for seasonal adjustment of time series data
{{Letter-number combination disambiguation