| OCI | Langue d'Oc (post 1500) 
| Others |
| OCI | Oakwood Collegiate Institute
| Others |
| OCI | Object Code Insertion
| Others |
| OCI | Object Computing Inc
| Others |
| OCI | Object Computing Inc.
| Others |
| OCI | Object Computing, Inc.
| Others |
| OCI | Ocean Color Instrument
| Others |
| OCI | Oceanic, Alaska USA
| Others |
| OCI | Office of Chief Information
| Others |
| OCI | Office of Colonia Initiatives
| Others |
| OCI | Office of Community Involvement
| Others |
| OCI | Office of Compliance Initiatives
| Others |
| OCI | Office of Conferences Institutes
| Others |
| OCI | Office of Continuous Improvement
| Others |
| OCI | Office of Criminal Investigations
| Others |
| OCI | Office of Criminal Investigations (FDA)
| Others |
| OCI | Office of the Commissioner of Insurance
| Others |
| OCI | Officine Costruzioni Meccaniche
| Others |
| OCI | Oil Change International
| Others |
| OCI | Oil Change Interval
| Others |
| OCI | Oil Climate Index
| Others |
| OCI | Oklahoma Correctional Industries
| Others |
| OCI | Oldtimer Club Innerschweiz
| Others |
| OCI | Omega Center International
| Others |
| OCI | On Campus Internships
| Others |
| OCI | On Campus Interview
| Others |
| OCI | On Campus Interviewing
| Others |
| OCI | On Campus Interviews
| Others |
| OCI | On-Campus Interview
| Others |
| OCI | Oncore Communications Incorporated
| Others |
| OCI | One Chance In
| Others |
| OCI | Online Commercial Intent
| Others |
| OCI | Online Course Information
| Others |
| OCI | Open Catalog Interface
| Others |
| OCI | Open Communication Interface
| Others |
| OCI | Open Connection Indication
| Others |
| OCI | Open Container Initiative
| Others |
| OCI | Open Containers Initiative
| Others |
| OCI | Operating Companies Income
| Others |
| OCI | Optical Comedy Incorporated
| Others |
| OCI | Optimised Contractor Involvement
| Others |
| OCI | Optional Column Identifier
| Others |
| OCI | Oracle Call Interface
| Others |
| OCI | Oracle Call Interfaces
| Others |
| OCI | Oracle Cloud Infrastructure
| Others |
| OCI | Orascom Construction Industries
| Others |
| OCI | Oregon Community Imaging
| Others |
| OCI | Organizational Concepts International
| Others |
| OCI | Organizational Conflict Of Interest
| Others |
| OCI | Other Comprehensive Income
| Others |
| OCI | Otter Creek Institute
| Others |
| OCI | Outpost Centers Incorporated
| Others |
| OCI | Outpost Centers International
| Others |
| OCI | Overseas Citizen of India
| Others |
| OCI | Overseas Citizens Of India
| Others |
| OCI | Overseas Citizenship of India
| Others |
| OCI | Overwhelmed Confused and Irritated
| Others |