| IPSO | Independent Press Standards Organisation 
| Others |
| IPSO | Industrial Parts Supply Operations
| Others |
| IPSO | Input Process Storage Output
| Others |
| IPSO | Input Processing Storage Output
| Others |
| IPSO | Inputs, Processes, Storage and Outputs
| Others |
| IPSO | Intellectual Property Student Organization
| Others |
| IPSO | Intellectual Property Student Organziation
| Others |
| IPSO | International and Postdoctoral Services Office
| Others |
| IPSO | International Postdoctoral Service Office
| Others |
| IPSO | International Programme on the State of the Ocean
| Others |
| IPSO | International Programs And Services Office
| Others |
| IPSO | International Programs Services Office
| Others |
| IPSO | International Psychoanalytic Studies Organization
| Others |
| IPSO | International Psychoanalytical Studies Organization
| Others |
| IPSO | International Society of Pediatric Surgical Oncology
| Others |
| IPSO | Internet Protocol (IP) Smart Object
| Others |
| IPSO | Internet Protocol for Smart Objects
| Others |
| IPSO | Internet Protocol Security Option
| Others |
| IPSO | IP Security Operating System
| Others |
| IPSO | Irish Payment Services Organisation
| Others |
| IPSO | Israeli Palestinian Science Organization
| Others |
| IPSO | Izationisraeli Palestinian Science Organization
| Others |