OCCO
| Acronym | Definition |
|---|---|
| OCCO | Office of Commissioned Corps Operations |
| OCCO | Oregon Coast Chamber Orchestra |
| OCCO | Ohio Community Corrections Organization |
| OCCO | Oklahoma Committee for Conscientious Objectors (Joy Mennonite Church; Oklahoma) |
| OCCO | Ohio Council of County Officials |
| OCCO | Online Clinical Communications for Ophthalmologists |