| Acronym | Definition |
|---|
| IPSO➣Independent Press Standards Organisation (UK) |
| IPSO➣Irish Payment Services Organisation (Ireland) |
| IPSO➣International Psychoanalytic Studies Organization (since 1971) |
| IPSO➣Internet Protocol Security Option |
| IPSO➣International Psychology Students Organization |
| IPSO➣International Peace Support Operations (course) |
| IPSO➣Information Piety Society of Orthodoxy (Catholic ministry) |
| IPSO➣Input, Processing, Storage, Output (computer engineering) |
| IPSO➣Original Integrated Protection System |