| Ontario ARC | Promote opportunity and independence for people with disabilities or other challenges. |
| Ontario County Office for the Aging | Serves people 60 years of age and older and their caregivers by providing advocacy, information, assistance, assessment, and referral. |
| OPC Transportation | OPC transportation is available for people 60 years or older and those under 60 who are disabled (doctor’s note required). |
| Operation Autism | Operation Autism is a web-based resource specifically designed and created to support military families that have children with autism. |
| Operation Surf | Operation Surf’s curriculum-based programs aim to inspire injured military and veterans to seek wellness in all aspects of their lives while providing the necessary resources, tools, and peer-to-peer support to continue this mindset indefinitely. |
| Opportunities for Access | Mission is to eempower persons with disabilities to increase their opportunities to access all aspects of community life |
| Opportunities for Access – Carmi satellite office | Mission is to eempower persons with disabilities to increase their opportunities to access all aspects of community life |
| Opportunities for Access – Effingham satellite office | Mission is to eempower persons with disabilities to increase their opportunities to access all aspects of community life |
| Opportunities for Inclusion | Serve children, adolescents and adults with intellectual and developmental disabilities and their families in the community, utilizing a person-centered planning approach. |
| Opportunities for Ohioans with Disabilities | Opportunities for Ohioans with Disabilities (OOD) is the State of Ohio agency that partners with Ohioans with disabilities to achieve quality employment, independence and Social Security disability determination outcomes. |