PX can be the code for:
- The stock symbol for Praxair
- The IATA code for Air Niugini
- Index of the Prague Stock Exchange (PX Index)
- Symbol for Paraxylene
PX can be an abbreviation for:
- Post exchange, a store operated by the Army and Air Force Exchange Service on US Army posts
- Pedro Ximénez, a grape used in the making of sweet "cream" Sherry, and a sweeter varietal wine named PX or Pedro Ximénez
- Part exchange
- p-Xylene, an aromatic hydrocarbon, based on benzene with two methyl substituents.
- pain, prognosis, physical examination, or pneumothorax, in various lists of medical abbreviations (often dependent on context to determine).
Other uses:
- px is an abbreviation for pixels, when used as a measure of resolution
- .px is a graphics file format used by the Pixel Image Editor
- Chi Rho, an early christogram formed by superimposing the first two letters in the Greek spelling of the word Christ (Greek : "Χριστός") in such a way to produce the monogram ☧.
- Medical prescription, the symbol "℞" looks like "Px".