GCH may refer to:
- The Generalized Continuum Hypothesis in mathematics (Set Theory)
- Knight Grand Cross of the Royal Guelphic Order
- Gas central heating
- Gym Class Heroes
- Grey Coat Hospital, a secondary school in London, UK
- .GCH, a file extension used by GCC for precompiled header files
- Great Canadian Heli-Skiing
|This disambiguation page lists articles associated with the title GCH.
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