Baq or BAQ may refer to:
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Places
- Baq, Semnan, northern Iran
- Baq, South Khorasan, eastern Iran
- Ernesto Cortissoz International Airport, Colombia (IATA:<code>BAQ</code>)
Other uses
- Body Attitudes Questionnaire, in psychology
- Basic Allowance for Quarters, in the U.S. military
- Basque language (ISO 639:<code>baq</code>), spoken in Spain and France