APW may refer to:

• Air pressurized water, a type of fire extinguisher
• All Points West Music & Arts Festival, held in Jersey City, New Jersey
• All Pro Wrestling, a professional wrestling promotion
• Angiosperm Phylogeny Website, dedicated to research on flowering plants
• AP World History, a college-level course offered to high school students
• Arrow Air, a former American cargo airline (ICAO code APW)
• Faleolo International Airport, Apia, Samoa (IATA code APW)
• People's Provincial Assembly, the political body governing the provinces of Algeria

• Coherence theory (optics)
• Coherence Therapy
• Coherence therapy
• Coherence time (communications systems)
• Coherent addition
• Coherent addition of lasers
• Coherent Backscattering
• Coherent backscattering
• Coherent Diffraction Imaging
• Coherent diffraction imaging
• Coherent diffractive imaging
• Coherent File Distribution Protocol
• Coherent module
• Coherent Photon Trapping
• Coherent potential approximation
• Coherent processing interval
• Coherent risk measure
• Coherent sampling
• Coherent Scattering
• Coherent spectroscopy
• Coherent Stokes Raman spectroscopy
• Coherers
• Cohesin
• Cohesion
• Cohesion (band)