Ontonagon County Historical Society
- Provides history and information about the museum and lighthouse.
- http://www.ontonagonmuseum.org/

Porcupine Mountains Wilderness State Park
- The park's 60,000 acres are one of the few remaining large wilderness areas in the Midwest.
- http://www.michiganring.com/travel/porkies.htm

Ontonagon Aviation
- Supplier of aerial photography for Northern Michigan, including scenic, real-estate, commercial and digital enhancement.
- http://ontonagonaviation.com/

Ontonagon Memorial Hospital
- Hospital and long term care facility. Physician directory and health fair events.
- http://www.omh.org/