| Acronym | Definition |
|---|
| APNI➣Australian Plant Name Index |
| APNI➣Association for Postnatal Illness (London, England, UK) |
| APNI➣Alliance Party of Northern Ireland |
| APNI➣Association Pointe Noire Industrielle (French; Congo industrial association) |
| APNI➣Au Pair Network International (UK) |
| APNI➣Action Potential Networks, Inc. (technology provider) |