Po

Po may mean:
 Polonium, a chemical element
 Po, the hero of the movie Kung Fu Panda
 Po (Teletubby), one of the Teletubbies
 Pô, a town in Burkina Faso
 Po, Asturias or Poo (until 2005), a parish of Llanes municipality, in Asturias, Spain
 Po River, in Italy
 Po River (Virginia), in the U.S. state of Virginia
 .po, an abbreviation of Portable Object and filename extension of text translation files used in software localization
 Po' boy (from "Poor Boy"), a type of submarine sandwich from New Orleans
 an abbreviation for Chamber pot
 Po!, an indie band from Leicester
 Sally Po, a fictional character in the Anime series, "Gundam Wing"
 pò (魄), the material manifestation of the soul according to Chinese belief

PO is also an acronym or abbreviation which may stand for:
Post office
Pau, France
PO postcode area centred on Portsmouth in the UK
In Armed services:
Petty Officer, a Non-Commissioned Officer rank in many navies
Pilot Officer, a junior commissioned rank the British and many Commonwealth air forces
In Aviation, Polar Air Cargo, IATA airline designator
Petrol Ofisi, Turkish petroleum distribution company
Pareto optimality
Purchase order
Principal Only, a type of collateralized mortgage obligation
Perfect Orange, a third wave ska band
 In law:
 Presiding Officer
 Parole/Probation officer
 In medicine, per os or per orem, literally "by mouth", a direction to take a medication by mouth
 In philosophy, Provocative operation, coined by Edward De Bono and part of a Lateral thinking technique
 In politics:
 Platforma Obywatelska, a Polish conservative-liberal party
 Pô (department), part of the Napoleonic Empire
 In Science and Technology:
 Pilkington Optronics, now Thales Optronics
 Product Owner in the Scrum development process
 Specimen code, collection of the Zoological Institute of the Russian Academy of Sciences, St Petersburg
 Petaoctet, a unit of information or computer storage
 In transportation, Chemin de Fer de Paris à Orléans, an old railway created to link Paris to Orléans
 Po, A Fracción of Barragan from the anime and manga series Bleach