GCH

GCH may refer to:

• Gachsaran Airport, in Iran
• Garelochhead railway station, in Scotland
• Generalized continuum hypothesis, in mathematical set theory
• Gold Coast University Hospital, in Australia
• Grand Cross of the Order of Princely Heritage
• Grey Coat Hospital, a secondary school in London
• GTP cyclohydrolase I, an enzyme
• Gym Class Heroes, an American band
• Knight Grand Cross of the Royal Guelphic Order

gch can be:

• The file extension for a precompiled header file by gcc