SCH or Sch may refer to:
* A Scholar of Trinity College, Dublin
* Sch (trigraph), the German letter for 'sh' as in 'fish'
* Schizophrenia, a psychiatric diagnosis
* SCH Synchronization Channel, a GSM Um radio interface channel
* Schutzhund, a dog sport
* Schedule, in systems of pipe sizes
* Succinylcholine, a neuromuscular blocking drug
* Sch. (Scheinergrade aka Degree Scheiner), an obsolete scale for measuring film speeds established by Julius Scheiner
* .sch (file extension), used for circuit diagram files by several design automation programs
* .sch, a second-level domain
* Sub-Conjunctival hemorrhage
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