The abbreviation P2P stands for:
- Peer-to- Peer (English peer for " equals ", " coequal " or " comrade" ), communication among peers
- Person -to- person, emphasis on computer-based interpersonal communication
- Phenyl-2- propanone, see phenylacetone
- Program-to - Program, emphasizing the communication between "intelligent " agents
- Pay -to-play, concept, in which one is obliged to pay before you can play online games for example.
- Procure-to -Pay, Fixed term for the process chain from procurement to payment in the Business Administration