CAHA or Caha may refer to:
- Canadian Amateur Hockey Association, a former ice hockey governing body in Canada
- Calar Alto Observatory or Centro Astronómico Hispano-Alemán, an astronomy institute in Spain
- Caha Mountains, a mountain range in Ireland
- Robert Caha (born 1976), a Czech footballer
See also
- Caha-Paluma
- Caha v. United States, see Tax protester constitutional arguments
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