CP4

CP4 may refer to:


 * CP4 (classification), a disability sport classification specific to cerebral palsy
 * an agrobacterium strain that is resistant to glyphosate and was the source for the CP4 EPSPS gene that is used in glyphosate-resistant genetically modified crops
 * a class of chemically peculiar stars
 * one of the Network Rail Control Periods
 * CP4, a specific complex projective space
 * cP4, the Pearson symbol used in crystallography to describe a specific cubic crystal structure with four atoms in the unit cell
 * CP4: an EEG electrode site according to the 10-20 system
 * Punggol MRT/LRT station, MRT station code CP4