IAOP
| Acronym | Definition |
|---|---|
| IAOP | International Association of Outsourcing Professionals |
| IAOP | International Association of Oral Pathologists (est. 1976) |
| IAOP | International Association of Outplacement Professionals (now Association of Career Professionals International) |
| IAOP | Irish Association of Older People (Dublin, Ireland) |
| IAOP | Izvestiya, Atmospheric and Oceanic Physics (journal; Russian Academy of Sciences) |