| Acronym | Definition |
|---|
| ACNI➣Arts Council of Northern Ireland |
| ACNI➣American Community Newspapers, Inc. (Addison, TX; also seen as ACN) |
| ACNI➣America Chung Nam, Inc. (paper recycling; Los Angeles, CA) |
| ACNI➣Age Concern Northern Ireland (UK) |
| ACNI➣Anugerah Carta Nasyid IKIM (Institut Kefahaman Islam Malaysia; Malaysian radio station) |
| ACNI➣Azienda Comunale per la Navigazione Interna (Municipal Company for Inland Navigation, Italy) |