PBO may refer to:
Government
- Parliamentary Budget Office, in the federal government of Australia
- Parliamentary Budget Officer, a Canadian civil servant
- Projected benefit obligation, a specially defined pension obligation under US-GAAP
Sciences
- Lead(II) oxide (PbO)
- Zylon, or Polybenzobisoxazole, a polymer
- Piperonyl butoxide, a pesticide synergist
Places
- Peterborough railway station (National Rail code: PBO)
- Paraburdoo Airport, Paraburdoo, Australia (IATA airport code: PBO)
- Pine Bluff Observatory, an astronomical observatory in Wisconsin, USA
- Plate Boundary Observatory, a geodetic observatory in the western United States
- Portland Bird Observatory, a wildlife observatory on the Isle of Portland, in Dorset, UK
Programming
- Pixel buffer objects, used for asynchronous pixel transfer operations in OpenGL
People
- Push Button Objects, a producer of experimental hip-hop
- President Barack Obama, former president of the United States
Video games
- Packed Bohemia Object, a data file used in the war games developed by Bohemia Interactive Studio
Computing
- Precision Boost Overdrive, a technology by AMD for processor overclocking
Other uses
- Pinoy Box Office, a Filipino cable channel
- Public Benefit Organization, a type of charity or non-profit organization
- Paperback original, a book originally published as paperback
- Pin Bones Out, a type of fish fillet
- Philharmonia Baroque Orchestra