PIM

PIM is an acronym for:
* In computing:
** Personal information management
** Personal information manager
** "Parallel Inference Machine", also known as a "Fifth generation computer systems project"
** Protocol Independent Multicast
** processor-in-memory, which is usually a CPU and memory on the same integrated circuit
* In science:
** Passive Intermodulation, a radio-interference generating process taking place in 'passive' non-linear circuits
** Phosphatidylmyo-inositol mannosides, which appear to be a glycolipid component of the cell wall of Mycobacterium tuberculosis
** Potentially Infectious Material
** Power Injection Method (structural vibration & Noise, Vibration, and Harshness)
** Powder Injection Moulding International, a company which does injection moulding of metal, cermic and carbides
* Penalties in Minutes (hockey)
* Pilot's information manual
* Platform-independent model, an Object Management Group acronym
* Power Integrated Module
* Presbyterian Inland Mission
* Product Information Management
* Project Information Model
* Probability and Impact Matrix (Project Management, Risk Analysis)
* Public Illumination Magazine

PIM can also stand for:
* PIM (software), a freeware archiving tool. It stands for "PPM by Ilia Muraviev", a data compression algorithm, where PPM stands for Prediction by Partial Matching

People

The name Pim can refer to:
* Pim Diffy, a character from the Disney Channel Original Series "Phil of the Future"
* Pim Fortuyn, an assassinated Dutch politician
* Pim Verbeek, head coach of the Australia national football team
* Pim Pimma, graduate of Brasenose College, Oxford. Alleged to have had the keys to another man's BMW.