PPG may stand for:

Science and technology

  • Pacific Proving Grounds, a former US-operated nuclear test site
  • Photoplethysmograph, an optically obtained volumetric measurement of an organ
  • Pterygopalatine ganglion, one of the four Parasympathetic ganglia of the head and neck
  • Pteridophyte Phylogeny Group, a group promoting the taxonomy of pteridophytes

; Chemistry

  • Photolabile protecting group, a strategy to temporarily protect functional group(s) and liberate upon action of light
  • Policosanol, a nutritional supplement
  • PPG Industries, a U.S. manufacturer, formerly known as Pittsburgh Plate Glass
  • PPG Place, its office complex
  • Polypropylene glycol, a polymer
  • Post-prandial glucose, a measure of blood sugar after a meal
  • Pounds per gallon, a measure of density, typically of a fluid. It is common in the oil industry, especially as a unit for Mud weight.
  • Purpurogallin, the aglycon of several glycosides from nutgalls

; Electronics & Electrical

  • PPG Phonem, a vocal synthesizer
  • Palm Products GmbH, an audio synthesizer company
  • Penile plethysmograph a device to measure male arousal
  • Push Proxy Gateway, a component of a WAP server in telecommunications
  • Pulse pattern generator, a piece of electronic test equipment or software used to generate digital electronics stimuli
  • Personal Protective Ground, a safety device that is conductive, used to ground electrical equipment in case of accidental energization during work

; Transport

  • PPG tankette, a Soviet armoured vehicle
  • IATA airport code for Pago Pago International Airport
  • Powered paragliding, a form of ultralight aviation

In fiction

  • The Powerpuff Girls, an animated television series
  • Powerpuff Girls Z, a Japanese TV series based on the American series
  • The Powerpuff Girls (2016 TV series), a reboot of the original series

Other

  • Palestinian Presidential Guard
  • Pittsburgh Post-Gazette, a major newspaper in the Pittsburgh, Pennsylvania region.
  • Planning Policy Guidance Notes, in the United Kingdom
  • Points per game in sports
  • Power play goal in ice hockey